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Through carrying out the force testing of single-row tooth, we have got a lot of valuable data and gain deeper understood of the interaction between bit teeth and rock. This study provides an important basis for researching the design and analysis means of rock bit in the future.

通过单齿圈破岩实验得到了大量宝贵的数据资料,对牙齿与岩石互作用过程的规律有了进一步的认识,为今后深入开展牙轮钻头设计、分析技术的研究提供了重要的技术依据。

The measurement and analysis of recess by tri-cone bit teeth and bottom-hole pattern is an important link of drilling test,a key means of studying rock-breaking mechanism,and valuating rock-breaking efficiency.

以三牙轮钻头上单齿圈为对象进行试验,研究钻头破碎岩石后得到的破碎坑。

The trend of hammer throw performance is wandering and declining since the 1990s.

当今世界高水平链球运动员投掷技术的发展趋势和新技术特点是:旋转速度高,动作节奏快,表现在每圈所用的时间短,单支撑阶段所用时间短于双支撑阶段。

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He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州,并在2005年伊瓦尔街,公寓生活。

Droperidol ( potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道,可能是 QT 间期延长的机制。

The Nazi's cruel treatment of the Jews during the Second World War is beneath contempt .

二战期间纳粹对犹太人的暴行极其可鄙。