查询词典 polymerisation

In chain-growth polymerisation, the highly-reactive spot on the growing polymer chain where new monomer is added.

活性中心活性中心是指连锁聚合中具有高活性的反应活性点，即新单体加入到增长的聚合物链的位置。

A compound required to start a chain reaction, such as free-radical polymerisation.

引发剂 能够引起连锁反应的化合物。

The cellulose pulp with α-cellulose higher than 90% and polymerisation degree of range of 450~625 was treated with 14%~16% sodium hydroxide solution for 30~40 min under temperature of 40~50°C, and blended with urea in the ratio of 1:2~3. The product was reacted in xylene as solvent at 137°C for 2~3 h.

指出：选用聚合度为450~625、α-纤维素含量大于90%的纤维素桨粕，用14%~16%的氢氧化钠溶液，于40~50℃条件下活化处理30~40min后，与尿素以1：2~3的比例混合，在137℃的二甲苯体系中反应2~3h，便可得到含氮量为2.4%~3.5%的纤维素氨基甲酸酯产物。

Under the protection of nitrogen gas, the reaction system can induce polymerisation of acrylamide. A plausible mechanism involving free radicals has been proposed.

提出了一种含有自由基过程的反应机理，据此导出了一个能够解释本文全部实验事实的速率方程。

The question marks remaining over many of PLA's performance criteria are reasons why those with access to the polymerisation technology have not invested in more production, the retailer suggests.

问号，其余超过许多解放军的业绩标准的原因，那些进入该聚合技术没有投入更多的生产，零售商的建议。

Other polymers, such as those made by step growth polymerisation may be more easily depolymerised. by undoing the condensation or elimination reaction that caused the monomer units to join.

其它聚合物，如由逐步聚合得到的聚合物，比较容易解聚，可通过引入导致单体单元链接的缩和反应的逆反应来实现。

These subunits form chains of varying length, referred to by the unit 'dp' (for degree of polymerisation, i.e. the number of flavan-3-ol subunits).

这些亚基形成不同长度的链，以&dp&为单位（对于聚合反应的程度，例如黄烷- 3 -醇亚基的数目）。

The use of the surfactants of the formula enable efficient emulsification and thus polymerisation at temperatures above those at which non-ionic unsaturated surfactants are effective.

使用式表面活性剂能够有效乳化并且因此能够在高于非离子不饱和表面活性剂有效时的温度下进行聚合。

A new styrene acrylic emulsion as surface sizing agent were synthesized by emulsion polymerisation, the effect of synthetic technique on properties of copolymers were discussed, and industrial experiment and application were completed.

本工作利用乳液聚合工艺研制开发了一种新型苯乙烯-丙烯酸酯类造纸表面施胶剂，探讨了乳液聚合的工艺条件对产品性能的影响，并完成了产品的中试和工业应用。

Also known as Step-Growth Polymerisation. A way of making polymers in which every polymer chain grows continuously through the course of the reaction, remaining quite small until almost all the monomer has reacted.

缩合聚合又称作逐步聚合，每一个聚合物链都是通过一个反应过程连续增长的，在这个反应过程中，聚合物的分子量是与单体的转化率成正比的。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。