英德
有道
百度
谷歌
图片
维基
百科
加长管
[机] extension tube
- 装备了巨大的轮子底盘和加长炮管，加农炮远远超过它的前辈臼炮。
Mounted on a large wheeled chassis and featuring a longer improved barrel, the cannon was far superior to the bombards that preceded it. - 主要介绍了SYZX75绳索取心液动锤配套加长岩心管在破碎岩层中的使用效果及使用该钻具的经验体会。
The paper mainly introduced the application effect and experience of lengthening coring barrel of SYZX75 wire-line coring hydro-hammer in fractured rock layer.
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