Drillers have combined old technologies into new methods of extracting this natural gas from the previously untapped soft rock layer a mile or more beneath the surface.
在原有的钻井技术中加入新方法后，天然气可以从离地表一英里甚至更深的未曾开发的柔软岩层中被开采出来。
The best polishing can be obtained while the depth of particles indented into wafer surface was equal to or near to the thickness of soft layer.
提出当磨料嵌入晶片表面的最大深度等于或接近于软质层厚度时，在理论上应具有最佳的抛光效果。
A utility model discloses a soft well dried net surface with big pores. The net surface comprises a layer of water-proof nonwoven whereon pluralities of big pores are distributed evenly.
本实用新型公开了一种大孔柔软干爽网面，该网面由一层拒水无纺布和在布面上制作出分布匀称的多个大孔构成。
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