Sheet glass manufacture: the float process

1.New words

1) Blemish

a) Noun a mark on something that spoils its appearance: freckles, scars, and other minor skin blemishes

b) Vt to spoil something: This latest revelation has seriously blemished the governor's reputation.

c) If you describe something as unblemished, you mean that it has no marks or holes on its surface. 无污迹的; 无洞的

2)  Labour intensive劳动密集型的

3)  Mangle

a) to destroy something by twisting it with force or tearing it into pieces so that its original form is completely changed:

b)  noun熨平机

4)  tinted and coated glass 着色镀膜的玻璃

5)  a bed of molten metal 以融化的金属做的平台

6)  pilot plant

a) N a small-scale industrial plant in which problems can be identified and solved before the full-scale plant is built 试验工场。

7) Full-scale plant 完整规模工厂

8) Marketable :可销售的

9) Float plants 浮法制造的工厂

10) Homogenise 使均匀

11) Float bath 浮槽；

12) Mar ：To mar something means to spoil or damage it. 破坏

13) Tremor：波动

14) Measurement

a) A measurement is a result, usually expressed in numbers, that you obtain by measuring something. 测量的结果

b) 例：We took lots of measurements.我们得到了许多测量的结果

15) steer a ship around reefs 驾船绕过暗礁

16) steer around an obstacle in the road. 绕过路上的障碍

17) steer cutters around flaws. 引导道具绕过缺陷。

2.Questions

两个题型。

最后一个类似于给整段文章起标题。最后做。

第一个题型是FILL GAP题，一个流程： float process. 难度系数低。

第二个题型是T/F/NG 顺序题

确定第一题的位置了。第一题的意思是：

9 The metal used in the float process had to have specific properties.

2.1. Early methods of producing flat glass

两个方法：其中一个是Ribbon, 优点 缺点 Method

第一段：The first successful method for making clear, flata glass involved spinning.

Advantages: it stayed perfectly unblemished

Disadvantages: However, the process took a long time and was labour intensive.

第二段：ribbon process

This allowed glass of virtually any thickness to be made non-stop, but the rollers would leave both sides of the glassmarked, and these would then need to be ground and polished.

人名：Pilkington’s float process

第四段：When pouring molten glass onto the molten tin,

Could be transported out of the cooling zone by rollers.

2.2. T/F/NG

9  The metal used in the float process had to have specific properties.

The metal had to melt at a temperature…… The best metal for the job was tin.

TRUE

10 Pilkington invested some of his own money in his float plant.

NG

11 Pilkington’s first full-scale plant was an instant commercial success

第五段：However, it took 14 months of non-stop production, costing the company…,before the plant produced any usable glass.

FALSE

12 The process invented by Pikington has now been improved.

第六段Float plants today… Several processes take place simultaneously in the 2000 tonnes of molten glass.

TRUE

13 Computers are better than humans at detecting faults in glass.

倒数第二段：Inspection technology allows more than 100 million measurements a second to be made across the ribbon, locating flaws the unaided eye would be unable to see.

Inspection

TRUE

1.3.Difficult sentences

1) where stresses formed during cooling are relieved.

Formed 在这里做后置定语修饰stress

2) ripple into 波及到

The effects of a global economic slowdown would ripple into south-eastern Europe.

全球经济增长放缓的影响将波及到东南欧洲。

3) put ripples into the glass ribbon

给玻璃带 带来连锁反应