... extend letter of credit ==> 延长信用证有效期 extend neck ==> 接筒 extend ones arms horizontally ==> 两臂平伸 ...
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与回接筒配套用于回接尾管的一种专用固井工具。
The tie-back assembly is a special cementing tool for tieback operation.
对于所有真活接类型球阀和球体止回阀，可提供完整的更换筒组件。
Full Cartridge Replacement Kits are available for all True Union style ball valves and ball check valves.
提出了红外加热胶接的思想，并对红外加热胶接技术作了简单阐述。介绍了一种红外加热胶接矿用阻燃、防腐、橡塑风筒布的装置。
Concept and method of gluing technique using ir heating are presented. An apparatus sed for gluing anticorrosive and fire-resistant wind cylindrical cloth in the same method is introduced.
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