1) wearing sleeve
保护套筒
3) protection of pit sha ft
井筒保护
4) protect canister
保护筒
1.
The design and application of protect canister for thermometers;
体温计保护筒的设计与应用
5) casing protection
套管保护
1.
Aiming at the serious casing corrosion of water injection wells,one chemical agent is injected into the annular space of the tubing and casing,and forms a ring-shape elastical seal plug,then the suitable corrosion control agent and bactericidal agent are injected,used as a casing protection fluid.
针对注水井环空油套管腐蚀严重的问题,在油管套管环空的某一指定位置使用化学剂形成一个环状粘弹性密封塞,注入适合本油田的防腐剂和杀菌剂作为套管保护液,对油套环空起到良好的保护作用。
6) assembly protection
成套保护
1.
With regard to the frequent occurrence of abnormal tripping faults of ZKH-3 feeder assembly protection in substation, implements the site-inspection, test and theoretical analysis of the faults, defines the reasons causing the incorrect operation and over-zone tripping of the assembly protection and points out the effective counter-measures.
针对牵引变电所ZKH-3型馈线成套保护多次发生非正常跳闸故障的现象,进行了现场检查、测试和理论分析,确定了该成套保护误动和越级跳闸的原因,提出了行之有效的处理措施。
补充资料：老套筒
1.一种旧式的步枪。
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