查询词典 descending chain condition

Above these temperatures, the acceleration of η〓 decrease was attributed to the chain scission and unzipping of macromolecules.

测得了PPC的临界缠结分子量，它几乎是MA-PPC相应值（6613）的3倍。

Based on the random chain scission mechanism, effects of temperature and time on the molecular weight and polydispersity index are included in this model.

通过模拟发现丙交酷加聚反应的存在会延长多分散系数达到平衡的时间，但使聚乳酸分子量降低速率变慢。

The degradation kinetics, effect of irradiation on the degree of deacetylation of chitosan and the main chain scission mechanism have been studied.

用 γ射线照射壳聚糖使之发生辐射降解，研究了降解反应的动力学、辐射对壳聚糖脱乙酰化度的影响以及大分子链的断链机理。

This derivation is only valid if no chain scission accompanies crosslinking.

这一关系式仅适用于交联时不伴有断链发生的情况。

Polymer modification as cross-link, chain scission, and graft-polymerization by radiation is initiated by the quantum energy transferred from radiation to polymers.

聚合物的辐射交联、降解和接枝改性都是由辐射向聚合物的能量转移引发的。

The results of experiments show that the random chain scission of maleated PHB obeys the six-membered ring ester decomposition process.

结果表明，PHB-g-MA的热分解机理与PHB相同：在高温条件下，PHB分子链的酯基部分形成六元环结构，断链时夺取亚甲基氢，生成羧基和双键两种端基。

PES samples were pyrolysed at 358℃ and 590℃, the products of dogradation can be explained on the basis of chain scission. The thermal stability of PES in both inert and oxidising atmospheres has been studied by means of TGA at varies rate of temperature rise.

在正常加工温度（315~335℃）下，使用HAAKE转矩流变仪对PES进行密炼和用挤出机对PES反复挤出，发现并研究了PES的外观，粘度、分子量及力学性能的改变。

Results showed that the ·OH radical could not only initiate the radiation crosslinking of PDMS latex, but also accelerate the scission of PDMS molecular chain.

结果表明，·OH不仅可引发聚二甲基硅氧烷的分子间交联，也能促进其降解。

The thermal stability and mechanical performance of PPC can be enhanced by maleic anhydride end-capping due to the depression of unzipping degradation and chain scission.

马来酸酐封端抑制了PPC解拉链式的热分解和无规链断裂热降解，PPC的热稳定性和力学性能得到提高。

The city road network in Urumqi city was built based on MapInfo with Arc Node data model of road network. The design of automatic chain scission and error handing about crossover point of road net work was completed.

采用Arc-Node路网数据模型，建立了基于MapInfo的乌鲁木齐市城市道路路网，利用GIS编程技术完成了路网交点的自动连接和错误处理，以及路段的自动断链技术，从而实现了交通路网拓扑结构的自动建立。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。