近年来，双齿配体因具有半配位效应而引起广泛关注并在钯催化的多种反应中得到应用。
Bidentate ligands with the property of hemilability have attracted chemists' research interests and have been widely applied in many palladium-catalyzed transformations.
研究齿接触半环抱钢板对骨折局部钢板下皮质骨血供的影响。
To study the influence of the tooth contact half cycle (TCC) steel plate on cortical bone blood supply at the fracture site.
结合六齿矩形花键轴实际成形情况进行模拟计算，获得了入模半锥角的较佳取值范围。
By numerical simulation of a six-tooth rectangle spline, the optimized half-angle of the concave die can be got.
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