whirl-resistant bit 防止偏心转动的钻头
This idea is backed up by survey data from America collected by Pew, a polling company: those who earned just a bit more than the minimum wage were the most resistant to increasing it.
民意调研公司Pew在美国获得的调研数据支持了这一结论:那些工资稍微比最低工资高一点的人最抵触提高最低工资。
Using such a common transporter to ferry a potent medication inside a resistant cell is a bit like recruiting your grandmother to cart a load of switchblade knives through customs.
利用这一常见的载体将有效的药物运送至耐药细胞中,这有点像让你的祖母装一车开关闸刀通过海关。
This paper describes the basic principle and use of the bit with weak holding and high wear resistant matrix.
本文介绍了弱包镶强耐磨性胎体钻头的基本原理及使用效果。
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