1) chemical dissolution
化学消退
1.
It has important real meaning to do experiments of chemical dissolution on carbon-free handwriting by using kinds of common organic dissolvent,and compare the dissolution effects with dissolution characteristics to support basic study data for the inspection of chemical dissolution of carbon-freeh and writing.
采用多种常见有机溶剂对无碳复写字迹进行化学消退实验,并比较消退效果及消退特征,为化学消退无碳复写字迹的检验提供基础性研究数据,具有重要的现实意义。
2) chemical degradation
化学退化
1.
The degradations include physical degradation,biological degradation and chemical degradation.
莱州湾南岸滨海湿地的退化包括物理退化、生物退化和化学退化3个方面。
3) extinction ratio degradation
消光比退化
1.
Theoretical analysis on extinction ratio degradation in XGM wavelength converter based on semiconductor optical amplifiers (SOA) is presented.
基于半导体光放大器的分段模型，利用传输矩阵计算方法，通过准确的增益谱模拟，分析了影响交叉增益型波长转换器消光比特性的因素，计算了泵浦光平均功率、探测光功率、波长转换间隔以及放大器长度与输出信号消光比退化之间的关系，运用能带填充效应的反过程引起的增益峰值波长的漂移解释了波长上转换更为严重的消光比退化现
4) regression
[英][rɪ'ɡreʃn] [美][rɪ'grɛʃən]
n.退化;退步;消退;回归
5) chemical stripping copper
化学退铜
6) optical degradation
光学退化
1.
Slow-positron annihilation analysis on optical degradation of ZnO white paint irradiated by protons
质子辐照ZnO白漆光学退化的慢正电子湮没分析(英文)
补充资料：工程化学障碍物(见化学障碍物)
工程化学障碍物(见化学障碍物)
engineering-chemical obstacle
习U·上日、11匕I一9 nuQXue Zhang’aiwu工程化学障碍物(engineelsng一ehemiealobstacle)见化学障碍物。
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