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.
轮式金刚石钻头是一种新型的石油钻探工具，钻头轴承的寿命对其使用寿命有着致关重要的影响。
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.
主要用于石油开采的管子产品种类。主要有铸件、钻竿、油井用管。
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