oil drill bearing
常见例句
- Wheel is a new diamond drill bit for oil drilling tools, drill bit bearing life with their life impact of crucial importance.
輪式金剛石鑽頭是一種新型的石油鑽探工具，鑽頭軸承的壽命對其使用壽命有著致關重要的影響。
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.
主要用於石油開採的琯子産品種類。主要有鑄件、鑽竿、油井用琯。
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