annular drill
annular drill 双语例句
Keywords large diameter deep hole mining of high stage; high-pressure annular drill; industrial experiment
高阶段大直径深孔采矿；高气压环型钻机；工业试验
Based the results of the calculating and considering, the temperature in annular space outside the drill stem should be no more than Ot, and corresponding suggestions are proposed.
根据计算和研究的结果，指出了为了保证在冻土中进行正常钻井，从外环状空间内返回的冲洗介质的温度不宜高于0℃，并提出了相应的建议。
The key factors affecting frictional pressure loss in narrow annuli are changing annular dimensions, rotation and vibration of drill strings.
影响窄环空中摩擦压降的关键因素为环空尺寸的变化、钻柱的旋转和振动。
The numerical examples show that the annular drilling fluids flowing in axial have a great influence upon the lateral vibration of the drill collar.
数值算例表明这种环形空间中存在并流动着的钻井液对钻柱的横向振动有很大的影响。
The Shang Dynasty jade carving and the primitive society jade carving have the obvious change, the Shang Dynasty early time two inside cultural jade spear, yue, the shovel, the jade tablet, the hollow piece of jade, the knife, the semi-annular jade pendant shape jade and so on, its modelling, carves, aspects and so on drill hole, polishing to achieve the quite high level.
殷商玉器与原始社会玉器有明显变化，商代早期的二里头文化所出的玉戈、钺、铲、圭、琮、刀、璜形玉等，其造型、雕琢、钻孔、抛光等方面都达到相当高的水平。
annular drill
相关单词辨析
这组词都有“练习、训练、锻炼”的意思，其区别是：
training: 普通用词，泛指为从事某种职业而进行的身体或智力方面的训练。
practice: 指把所学的理论或知识用于实践以获得技艺与技巧。
exercise: 主要指为强壮体魄而进行的锻炼，也可指进行练习以保持已经获得的技巧。
drill: 侧重进行有系统的，严格和重复的练习。
discipline: 既可指训练又可指为达到某种熟练程度而进行的约束。