本文介绍了钏路煤层及相关割理系统的特性,通过试验研究了围压变化和煤层割理对气体渗透性的影响.The influence of confining pressure change and coal cleat on gas permeability is studied by experiments....
I was confronted with an array of knobs, levers, and switches.我面对的是一大堆旋钮、控制杆和开关。All their beds were distinctive; Mac'swas an iron affair with brass knobs.他们的床都各具特色；马克的床是张带球形黄铜柱头的铁家伙。The door knobs came off in our ha...
The operation is carried out under a general anaesthetic.该手术是在全身麻醉情况下实施的。The formalization of co-operation between the republics would produce progress.正式确立合作关系将会促进共和国之间合作的顺利进展。The air rescue operation has now been scale...