1) Preheating method
预热方式
2) Firmly beforehand means
预紧方式
3) prepolymerization method
预聚方式
1.
005, but using different prepolymerization methods, the biodegradable material poly (lactic acid)-polyethylene glycol (PLEG) was directly synthesized via melt polyconden-sation, and characterized with intrinsic viscosity, GPC, FTIR, 1H NMR, and DSC.
FTIR、1HNMR、DSC等手段对其进行了系统的表征,发现不同的预聚方式存在一定的影响,LA和PEG直接进行一步预聚时相对分子质量较高,对药物缓释载体PLEG的合成较为有利。
2.
It was found that many synthetic factors had influences on the PLEG,especially the composition of PLEG was different when using different prepolymerization methods,and the copolymer's weight average relative molecular weight(Mw) when starting f.
直接以乳酸(LA)单体和聚乙二醇(PEG)为原料,通过直接熔融共聚法,合成了生物降解材料聚乳酸-聚乙二醇(PLEG),用特性粘数[η]、GPC、FTIR1、H NMR、DSC和X-射线衍射等手段对其进行了系统的表征,发现许多因素对PLEG存在一定的影响,如不同的预聚方式时PLEG的组成不同、左旋乳酸(L-LA)获得的共聚物相对分子质量不如外消旋乳酸(D,L-LA)等。
4) pre-storage method
预养方式
1.
Investigations on effect of specimen size and pre-storage method on rate of concrete sulfate attack;
试件尺寸和预养方式对混凝土硫酸盐侵蚀速度影响
5) scheduled mode
预定方式
6) alarm mode
预警方式
1.
Atmospheric electric field monitoring net s data coherence and amelioration for alarm mode;
大气电场仪联网数据一致性及预警方式的改进
补充资料：油气田开发方式(见油气田生产方式)
油气田开发方式(见油气田生产方式)
development pattern of oil and gas field:see recovery pattern of oil and gas field
a垃d gas月e卫d) 、‘。尸卫Jlent见油气田小冰、*pa士teroof ojl
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条