2025-10-31 10:55 浏览次数 10
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1. European Community; European Communities
2. ethical consideration; European Community; European Communities
EC Cu-Zn SOD酶活力
DC-EC DC-SE HCD直线位移传感器
EC electron-beam-induced conductivity电子束感应电导率
GLYNYARI EC BRIDGET-ET母
EC Type-examination certificate型式检验证书
EC Eco-Label欧盟生态环保标章
EC Eco-Labelling Scheme盟环境标志方案
ECOLOR EC FX-9易彩EC
the technology mentioned could prolong the service life of old pipe, reduce ec- centric wearing, and extend the wax removal cycle.
对延长旧管使用寿命,减少桿管偏磨,延长油井清蜡周期具有良好的效果。