core-bit tap 打捞金刚石取心钻头的公锥
On tap: A finance professor will deliver an orientation lecture this month to all incoming full-time students about how each of their core courses relates to the crisis.
其中一个举措是,一位金融学教授本月将向所有全日制新生提供一个入学培训,讲述他们的每门核心课程与这场危机的关系是怎样的。
Tap valve on the common market, there are three: stainless steel ball valve, ceramic valve core and valve shaft roll style.
市场上常见的水龙头阀芯有三种:不锈钢球阀,陶瓷片阀芯和轴滚式阀芯。
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