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Dribs and Drabs

(2011-09-22 20:26:08)
标签:

宋体

亚硫酸钠

清除剂

阿佛加德罗常数

供水系统

it

分类: Technology

Source Language

Target Language

Mole - Standard unit for measuring everyday quantities of such minute entities as atoms or molecules.

For any substance, the number of atoms or molecules in a mole is Avogadro's number (6.02 x 1023) of particles.

Defined exactly, it is the amount of pure substance containing the same number of chemical units that there are in exactly 12 grams of carbon-12.

Net Positive Suction Head (NPSH) - NPSH shows the difference between the actual pressure of a liquid in a pipeline and the liquid's vapor pressure at a given temperature.

摩尔---是衡量诸如微小物体,如原子或分子的日常数量标准单位。
对任何物质而言,一摩尔中原子或分子的数量就是该微粒的阿佛加德罗常数。
明确的定义表明,同一化学单位中,纯物质的含量, 恰好就是12克碳12的的数量。
净吸压头,表明了在既定温度下,管道中液体的实际压力和液体的蒸汽压的差异

 

NPSH is an important parameter to take into account when designing a hydraulic circuit.

Whenever the liquid pressure drops below the vapor pressure, liquid boiling occurs, and the final effect will be cavitation.

Vapor bubbles may reduce or stop the liquid flow, as well as damage the system.

Oxygen scavenger – A chemical reacting with the oxygen in the feedwater.

The residual amount of the chemical in the feedwater is an indication of the lack of oxygen.

The most commonly used oxygen scavenger is sodium sulfite (Na2SO3).

It is very effective and rapidly reacts with traces of oxygen to form sodium sulfate (Na2SO4) which is non-scaling.

Another widely used oxygen scavenger is hydrazine (N2H)

在液压回路设计中,泵的汽蚀余量是一个需要考虑的重要参数。当液体压力下降到蒸汽压力以下时, 液体会发生沸腾,并最终产生气穴。气泡可以减少或组织液体流动,也会损害系统。氧气清除剂,与供水系统的氧气发生化学反应,供水系统中的残留化学物质,就是缺氧指示。最常用的氧气清除剂是亚硫酸钠。亚硫酸钠作为清除剂非常有效,而且能跟极少量的氧气快速发生反应,生成硫酸钠,不起皮。

另外一种广泛使用的氧气清除剂是  联氨

 

our relationship includes financing by way of a low eight figure line of credit as well as foreign exchange, credit card and treasury management services

我们的关系包括通过8位数的低信用额度,以及外汇, 信用卡,资金管理服务来融资。

付款方式:订单确认后预付30%的订金,结清余款后发货。

Way of payment: a down payment worth of 30% of the total amount is required following the confirmation of the order. The delivery of the contracted goods is made after clearing all the spare money.

静心无极,养生有道

Boundless meditation is the right way to keep healthy.

We remain at your disposal for any further details you may

若你方需要其他的更多的细节。我们愿意继续配合

重大装备自主化依托工程设备招标项目

Bid inviting project for self-made significant furnishment based on engineering equipments

为了加强焊接工程的管理,确保项目现场设备、管道、钢结构等焊接施工满足设计图纸以及相关标准规范的要求,特编制本规定。

For the purpose of enhancing the management of welding project,ensuring the welding operation process  including the on-site equipments, pipes, steel sturctures etc to meet the reqiremnts regulated by the design paper and in conformity with  other related standard specifications criterion, we hereby compile and  establish these rules and norms

In the event that Party A purchases increased or total ownership of the JV from Party B, Party B agrees to license the continued use of the intellectual property as a condition of such transfer of ownership at a royalty rate to be agreed, but which in no event shall exceed 3% of sales of the JV.

如果甲方从乙方手中追加购买,或买下JV公司的全部所有权,则乙方同意, 将许可继续使用以版税率待定的知识产权作为中此种所有权转移的条件,但是版税率决不能超过JV公司销售额的3%

It estimates that demand will grow by an average of 1.47 mln barrels a day in 2012, up from the current 2011 average daily growth of 1.2 mln

据估计,市场需求将会从2011年目前的日均120万桶,增加到2012年的日均147万桶

Bin Laden's religious zeal was colored by the fact that his family had made its vast fortune as the principal contractor renovating the holy sites of Mecca and Medina, which gave him a direct connection to Islam's holiest places

本的宗教热情,在事实面前,即他的亲人,作为主要承包人,承接整修圣地麦加和麦地那的过程中,发了大财,此举让他跟伊斯兰圣地扯上了直接的关系,但是 也让他的形象大打折扣。

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