The result is a smoother surface, lower contact stresses and an increase in service life.
结果是表面更为平滑、接触应力降低和使用寿命延长。
Their high torque ratings permit use of smaller diameter units which lower contact velocity on high speed applications.
其高扭矩比率允许使用较小直径的单位联连接速度较低的高速应用。
He knelt and bent lower, till her breath warmed his face, and in a moment his cheek was in contact with hers.
他跪了下去,把身子俯得更低了,他的脸已经感觉到她的呼吸的温暖了,不一会儿,他的脸就同她的脸接触到一起了。
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