The current situation of chemical fiber in China are reviewed, the concept of differential fiber and its chief varieties are introduced.
简要地回顾了我国化纤的现状，介绍了差别化纤维的概况及其主要品种。
It is the first time in China that a dual flange differential pressure intelligent meter of us Honeywell Co. make has been used for the measurement of oil water interface.
在国内首次选用美国霍尼韦尔双法兰差压变送器智能表测量油水界面，用计算机实现闭环控制，取得满意效果。
The geographic differential characteristics of the background of lead in soil in China has been studied based on the analysis of lead in soil of various cities.
本文通过对我国城市地区土壤铅背景值的分析，研究了我国土壤铅背景值的地理分异特征，并对其成因进行了探。
应用推荐