1) primary decompression
初步减压
2) preliminary vacuum
初期减压
3) decompression step by step
逐步减压
1.
The effects of temperature,time of reaction,amount of catalyst,time of esterifying,time of decompression step by step,etc, on molecular weight of PLA were studied.
以L-乳酸单体为原料,用逐步减压缩聚法合成了相对高分子量的聚乳酸。
4) Three-steps decompression
三步减压法
5) con-tribution rate
减步
6) step attenuator
步进衰减器分压器
补充资料：初步
1.开始阶段的。
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