附第5步的检索公式：

IF>30

0007-9235[ISSN] OR 0028-4793[ISSN] OR 0009-2665[ISSN] OR 1471-0056[ISSN] OR
0140-6736[ISSN] OR 0028-0836[ISSN] OR 1471-0072[ISSN] OR 0732-0582[ISSN] OR
1476-1122[ISSN] OR 1061-4036[ISSN] OR 1474-175X[ISSN] OR 1474-1733[ISSN] OR
1474-1776[ISSN] OR 1087-0156[ISSN] OR 0092-8674[ISSN] OR 1471-003X[ISSN] OR
1748-3387[ISSN] OR 0036-8075[ISSN] OR 0031-9333[ISSN]

30>IF>20

0098-7484[ISSN] OR
0066-4154[ISSN] OR0079-6700[ISSN] OR 0739-5175[ISSN] OR 1529-2908[ISSN] OR
1553-4006[ISSN] OR1934-5909[ISSN] OR 1470-2045[ISSN] OR 0306-0012[ISSN] OR
1535-6108[ISSN] OR1474-4422[ISSN] OR 1543-5008[ISSN] OR 1548-7091[ISSN] OR
0066-4146[ISSN] OR1873-2208[ISSN] OR 0370-1573[ISSN] OR 1078-8956[ISSN] OR
1740-1526[ISSN] OR0031-6997[ISSN] OR 1755-4330[ISSN] OR 0362-1642[ISSN] OR
0001-4842[ISSN] OR1465-7392[ISSN] OR 0147-006X[ISSN]

20>IF>10

1473-3099[ISSN] OR 1074-7613[ISSN] OR 0066-4278[ISSN]OR 1745-2473[ISSN] OR
0140-525X[ISSN] OR 0732-183X[ISSN] OR 1081-0706[ISSN] OR1461-023X[ISSN] OR
0066-4197[ISSN] OR 0893-8512[ISSN] OR 1092-2172[ISSN] OR1531-7331[ISSN] OR
1364-6613[ISSN] OR 0896-6273[ISSN] OR 0033-2909[ISSN] OR1759-4758[ISSN] OR
0169-5347[ISSN] OR 1097-2765[ISSN] OR 0066-4308[ISSN] OR1549-1277[ISSN] OR
1097-6256[ISSN] OR 0009-7322[ISSN] OR 1759-4774[ISSN] OR1359-4184[ISSN] OR
0163-769X[ISSN] OR 0935-9648[ISSN] OR 0002-953X[ISSN] OR1550-4131[ISSN] OR
0066-4219[ISSN] OR 1552-5260[ISSN] OR 1088-9051[ISSN] OR1941-0611[ISSN] OR
0027-8874[ISSN] OR 0907-4449[ISSN] OR 0195-668X[ISSN] OR0735-1097[ISSN] OR
0003-4819[ISSN] OR 0003-990X[ISSN] OR 1433-7851[ISSN] OR0066-4170[ISSN] OR
0166-2236[ISSN] OR 0066-426X[ISSN] OR 0034-4885[ISSN] OR0168-6445[ISSN] OR
0022-1007[ISSN] OR 0968-0004[ISSN] OR 1530-6984[ISSN] OR1552-4450[ISSN] OR
0066-4227[ISSN] OR 0169-409X[ISSN] OR 1534-5807[ISSN] OR0016-5085[ISSN] OR
0021-9738[ISSN] OR 1544-9173[ISSN] OR 1936-122X[ISSN] OR1931-3128[ISSN] OR
0890-9369[ISSN] OR 1548-5943[ISSN] OR 1063-5157[ISSN] OR0105-2896[ISSN] OR
1936-0851[ISSN] OR 0091-6749[ISSN] OR 1554-8627[ISSN] OR0270-9139[ISSN] OR
1545-9985[ISSN] OR 0033-5835[ISSN] OR 0009-7330[ISSN] OR1360-1385[ISSN] OR
0962-8924[ISSN] OR 0955-0674[ISSN] OR 1744-4292[ISSN] OR0002-9297[ISSN] OR
0364-5134[ISSN] OR 1073-449X[ISSN] OR 1759-5029[ISSN] OR0010-8545[ISSN] OR
1523-9829[ISSN] OR 0021-9525[ISSN] OR 1946-6234[ISSN] OR0017-5749[ISSN] OR
0002-7863[ISSN] OR 1001-0602[ISSN] OR 0302-2838[ISSN] OR 1759-5045[ISSN]OR
1759-5002[ISSN] OR 0098-2997[ISSN] OR 0737-4038[ISSN] OR 0006-3231[ISSN]
OR0163-7827[ISSN] OR 0066-4286[ISSN] OR 0265-0568[ISSN] OR 0887-6924[ISSN]
OR2159-8274[ISSN] OR 2041-1723[ISSN]

10>IF>5

0006-8950[ISSN]OR
0168-8278[ISSN] OR 0261-4189[ISSN] OR 0033-295X[ISSN] OR 0168-9525[ISSN]
OR1759-4790[ISSN] OR 0027-8424[ISSN] OR 0001-6322[ISSN] OR 0167-7799[ISSN]
OR0734-9750[ISSN] OR 0198-6325[ISSN] OR 1471-4914[ISSN] OR 1527-8204[ISSN]
OR0960-9822[ISSN] OR 1471-4906[ISSN] OR 1367-5931[ISSN] OR 0149-7634[ISSN]
OR1350-9462[ISSN] OR 1058-4838[ISSN] OR 0193-936X[ISSN] OR 1040-4651[ISSN]
OR0165-6147[ISSN] OR 0006-3223[ISSN] OR 0006-3223[ISSN] OR 1743-8977[ISSN]
OR0199-9885[ISSN] OR 1368-7646[ISSN] OR 0003-4967[ISSN] OR 0006-4971[ISSN] OR
0301-0082[ISSN]OR 1046-6673[ISSN] OR 1723-8617[ISSN] OR 1751-7362[ISSN] OR
1043-2760[ISSN] OR1355-4786[ISSN] OR 0084-6597[ISSN] OR 1359-6101[ISSN] OR
0952-7915[ISSN] OR0959-440X[ISSN] OR 1087-0792[ISSN] OR 0008-5472[ISSN] OR
1936-1327[ISSN] OR1553-7390[ISSN] OR 0586-7614[ISSN] OR 0340-1022[ISSN] OR
1369-5266[ISSN] OR0966-842X[ISSN] OR 0040-6376[ISSN] OR 1350-9047[ISSN] OR
2041-6520[ISSN] OR0305-1048[ISSN] OR 0272-8087[ISSN] OR 0028-3878[ISSN] OR
0897-4756[ISSN] OR1369-5274[ISSN] OR 0896-8411[ISSN] OR 1553-7366[ISSN] OR
0012-9615[ISSN] OR0091-3022[ISSN] OR 1568-9972[ISSN] OR 1750-2799[ISSN] OR
1759-5061[ISSN] OR0031-9007[ISSN] OR 0085-2538[ISSN] OR 0012-1797[ISSN] OR
0958-1669[ISSN] OR1743-5390[ISSN] OR 1863-2653[ISSN] OR 1078-0432[ISSN] OR
1613-6810[ISSN] OR0165-0173[ISSN] OR 1838-7640[ISSN] OR 1757-4676[ISSN] OR
0163-7258[ISSN] OR0167-7659[ISSN] OR 0149-5992[ISSN] OR 0277-7037[ISSN] OR
1066-5099[ISSN] OR0964-6906[ISSN] OR 1937-9145[ISSN] OR 0168-3659[ISSN] OR
1052-9276[ISSN] OR0142-9612[ISSN] OR 0022-3417[ISSN] OR 0002-9270[ISSN] OR
1083-3021[ISSN] OR1947-5438[ISSN] OR 0033-5770[ISSN] OR 0004-3591[ISSN] OR
1864-5631[ISSN] OR0959-437X[ISSN] OR 1044-579X[ISSN] OR 1755-098X[ISSN] OR
0923-7534[ISSN] OR0950-9232[ISSN] OR 0959-4388[ISSN] OR 1759-4685[ISSN] OR
0742-3098[ISSN] OR0091-6765[ISSN] OR 0065-2776[ISSN] OR 1535-9476[ISSN] OR
0033-3190[ISSN] OR1466-822X[ISSN] OR 1469-221X[ISSN] OR 1523-0864[ISSN] OR
0009-9147[ISSN] OR0079-6816[ISSN] OR 0065-2318[ISSN] OR 1077-5552[ISSN] OR
1525-0016[ISSN] OR 1933-0219[ISSN]OR 0300-5771[ISSN] OR 0890-8567[ISSN] OR
1549-9634[ISSN] OR 0070-2153[ISSN] OR0018-9219[ISSN] OR 1354-1013[ISSN] OR
0270-6474[ISSN] OR 1065-9471[ISSN] OR0194-911X[ISSN] OR 1467-7881[ISSN] OR
1096-7176[ISSN] OR 0009-9236[ISSN] OR1463-9262[ISSN] OR 1047-3211[ISSN] OR
0031-9228[ISSN] OR 1548-9221[ISSN] OR0028-646X[ISSN] OR 1942-3268[ISSN] OR
1574-7891[ISSN] OR 1941-3289[ISSN] OR1741-7015[ISSN] OR 1542-3565[ISSN] OR
1949-2553[ISSN] OR 1359-0294[ISSN] OR1462-3994[ISSN] OR 0007-1250[ISSN] OR
1948-7185[ISSN] OR 1571-0645[ISSN] OR0960-7412[ISSN] OR 0032-0889[ISSN] OR
1936-8798[ISSN] OR 1359-6446[ISSN] OR0065-2911[ISSN] OR 1941-7640[ISSN] OR
1741-7007[ISSN] OR 0002-9165[ISSN] OR0012-186X[ISSN] OR 1534-0384[ISSN] OR
0820-3946[ISSN] OR 0954-6820[ISSN] OR0021-972X[ISSN] OR 1040-7308[ISSN] OR
0269-9370[ISSN] OR 1359-7345[ISSN] OR0903-1936[ISSN] OR 0065-230X[ISSN] OR
0165-9936[ISSN] OR 0033-8419[ISSN] OR1079-5642[ISSN] OR 0003-4932[ISSN] OR
1467-7644[ISSN] OR 0962-1083[ISSN] OR1040-8444[ISSN] OR 1053-8119[ISSN] OR
0160-4120[ISSN] OR 1180-4882[ISSN] OR2040-3364[ISSN] OR 0166-0616[ISSN] OR
0962-8436[ISSN] OR 0950-1991[ISSN] OR1084-9521[ISSN] OR 0020-7136[ISSN] OR
0022-202X[ISSN] OR 1600-6135[ISSN] OR1522-8517[ISSN] OR 0001-8686[ISSN] OR
0197-4580[ISSN] OR 1936-878X[ISSN] OR0010-9452[ISSN] OR 0039-2499[ISSN] OR
1074-5521[ISSN] OR 1523-7052[ISSN] OR0884-0431[ISSN] OR 1674-2052[ISSN] OR
0090-3493[ISSN] OR 1366-9516[ISSN] OR0312-5963[ISSN] OR 0512-3054[ISSN] OR
0340-6245[ISSN] OR 1538-7836[ISSN] OR2041-4889[ISSN] OR 0305-7372[ISSN] OR
0079-6565[ISSN] OR 0268-960X[ISSN] OR0969-2126[ISSN] OR 1080-6040[ISSN] OR
1568-1637[ISSN] OR 1941-3084[ISSN] OR0008-6363[ISSN] OR 0390-6078[ISSN] OR
1044-5323[ISSN] OR 0169-5347[ISSN] OR1355-6215[ISSN] OR 1878-7479[ISSN] OR
0300-8428[ISSN] OR 0105-4538[ISSN] OR0021-9533[ISSN] OR 1465-5411[ISSN] OR
1465-5411[ISSN] OR 0008-6223[ISSN] OR1467-2960[ISSN] OR 0012-3692[ISSN] OR
0022-1899[ISSN] OR 1755-1471[ISSN] OR0957-9672[ISSN] OR 0947-6539[ISSN] OR
0926-3373[ISSN] OR 0160-6689[ISSN] OR1941-9651[ISSN] OR 0025-6196[ISSN] OR
0161-5505[ISSN] OR 1462-2912[ISSN] OR1044-3983[ISSN] OR 0013-726X[ISSN] OR
0883-0185[ISSN] OR 1474-9718[ISSN] OR0892-6638[ISSN] OR 1361-6137[ISSN] OR
0022-2593[ISSN] OR 1473-0189[ISSN] OR 0003-2700[ISSN]OR 0962-8452[ISSN] OR
1939-0041[ISSN] OR 1941-7713[ISSN] OR 1941-7713[ISSN] OR1742-4690[ISSN] OR
0304-3959[ISSN] OR 1461-1457[ISSN] OR 0143-3334[ISSN] OR1073-8584[ISSN] OR
0969-9961[ISSN] OR 1420-682X[ISSN] OR 0022-2623[ISSN] OR0889-1591[ISSN] OR
1535-7163[ISSN] OR 1080-0549[ISSN] OR 0033-2917[ISSN] OR1040-9238[ISSN] OR
0161-6420[ISSN] OR 1098-3600[ISSN] OR 1754-6834[ISSN] OR0360-2532[ISSN] OR
1615-4150[ISSN] OR 0035-8711[ISSN] OR 0024-9297[ISSN] OR0022-1767[ISSN] OR
0038-6308[ISSN] OR 1471-4922[ISSN] OR 0167-5273[ISSN] OR[ISSN] OR
0954-4224[ISSN] OR 1050-9631[ISSN] OR 1025-496X[ISSN] OR1025-496X[ISSN] OR
0893-7648[ISSN] OR 1476-5586[ISSN] OR 0020-9996[ISSN] OR1471-4892[ISSN] OR
1554-8929[ISSN] OR 0956-5663[ISSN] OR 0265-9247[ISSN] OR 0021-9630[ISSN]OR
1080-8248[ISSN] OR 0271-678X[ISSN] OR 1863-2297[ISSN] OR 0270-7306[ISSN]
OR1525-7797[ISSN] OR 0305-7453[ISSN] OR 0895-4356[ISSN] OR [ISSN]
OR1367-4803[ISSN] OR 0735-9640[ISSN] OR 1560-2745[ISSN] OR 1566-5232[ISSN]
OR1525-8610[ISSN] OR 1467-5463[ISSN] OR 0272-6386[ISSN] OR 0091-6331[ISSN]
OR1942-0862[ISSN] OR 0891-5849[ISSN] OR 1351-0088[ISSN] OR 1743-5889[ISSN]
OR0342-4642[ISSN] OR 0013-936X[ISSN] OR 1550-7033[ISSN] OR 0893-3952[ISSN]
OR0042-9686[ISSN] OR 1388-9842[ISSN] OR 1551-4005[ISSN] OR 0022-0957[ISSN]
OR0112-1642[ISSN] OR 0307-0565[ISSN] OR 0307-0565[ISSN] OR 0307-0565[ISSN]
OR0340-5761[ISSN] OR 1059-7794[ISSN] OR 0016-5107[ISSN] OR 0008-543X[ISSN]
OR1040-8711[ISSN] OR 1462-8902[ISSN] OR 0012-9658[ISSN] OR 0003-3022[ISSN] OR
0022-2828[ISSN]OR 0306-4530[ISSN] OR 0140-7791[ISSN] OR 1476-4598[ISSN] OR
1470-269X[ISSN] OR1367-6733[ISSN] OR 1078-0998[ISSN] OR 0031-4005[ISSN] OR
0393-2990[ISSN] OR1619-7070[ISSN] OR 1053-2498[ISSN] OR 1540-1405[ISSN] OR
0161-8105[ISSN] OR0738-8551[ISSN] OR 0785-3890[ISSN] OR 1742-7061[ISSN] OR
1478-811X[ISSN] OR1355-8382[ISSN] OR 0004-6361[ISSN] OR 0007-0920[ISSN] OR
0022-538X[ISSN] OR1555-9041[ISSN] OR 0007-1188[ISSN] OR 0894-1491[ISSN] OR
1520-765X[ISSN] OR1040-841X[ISSN] OR 0959-8049[ISSN] OR 1535-3893[ISSN] OR
0129-0657[ISSN] OR1541-4337[ISSN] OR 1547-5271[ISSN] OR 0748-3007[ISSN] OR
1749-5016[ISSN] OR0883-7694[ISSN] OR 1355-6037[ISSN] OR 1944-8244[ISSN]