... conventional approach 常规方法 conventional barrel 常规取心筒 conventional bit 常规钻头 ...
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conventional core barrel 常规岩心筒
With conventional techniques, oil prices have to be above $50 to $60 per barrel—as they have been for several years—for oil sands to be economical.
如果使用传统的技术开采油砂资源而且要划算的话，其油价将会是在每桶50美元到60美元以上，其实过去这些年都是这个价。
The BRG-15 had conventional, gas operated action with rotating bolt, locking into the barrel extension.
该担心现有- 15接受传统，燃气经营与旋转螺栓行动，延长锁入桶。
It USES more or less conventional short stroke gas piston, located above the barrel.
资讯科技或多或少使用传统的短笔划瓦斯活塞，位于在桶上面。
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