... extra fine [化]超细的；超级的；极优的；高级优质的 extra hard adj. 极硬 extra pay 额外报酬；奖励；额外的费用 ...
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高抗压强度的硬地层，如硬石灰岩。燧岩。硬砂岩。石英岩。石英砂。玄武岩。花岗岩等极硬岩层。
Medium hard formation with high compressive strength. Such as limestone, taconite, blaize, quartzite, silica sand, basalt, granite ect.
硬开关(图26所示)几乎不考虑漏源极电压的最小值。
The hard switching approach (as shown in Fig. 26) doesn't consider the minimum drain-source voltage.
目的探索胸椎间盘突出、腰椎极外侧椎间盘突出及硬脊膜内椎间盘突出的临床与外科处理特点。
Objective To probe the characteristics of clinical and surgical treatment of thoracic disc herniation, extreme lumber disc herniation and intradural spinal lumber disc herniation.
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