oil drill bearing
常見例句
- Wheel is a new diamond drill bit for oil drilling tools, drill bit bearing life with their life impact of crucial importance.
輪式金剛石鉆頭是一種新型的石油鉆探工具，鉆頭軸承的壽命對其使用壽命有著致關(guān)重要的影響。
lib.swpu.edu.cn - Category of pipe products used by petroleum exploration customers. Labels bearing OCTG are applied to casting, drill pipes, oil well tubing, etc.
主要用于石油開采的管子產(chǎn)品種類。主要有鑄件、鉆竿、油井用管。
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