接触面

The conventional onesided travelling-wave ultrasonic motor needs bearing to support and oil to lubricate, does provide sufficiently high torque and power due to limited contact area between the stator and the rotor, consequently its application is limited.

针对传统的行波超声电机定转子接触面小、输出力矩小，需要轴承定位，存在润滑问题，设计了一种新型双锥面齿驱动的自支撑轴系行波超声电机。

In the cylindrical coordinates, the related basic formula and solve method of the equivalent boundary element method were established and derived, and a new contact element was introduced to model the hybrid of structure and soil.

同时建立并推导了在柱体坐标系下插入式大圆柱壳墩式结构的等效边界元数值分析的相关基本方程和求解方法，并提出了一种新的接触面单元以模拟结构和土体间不同材料的耦合关系。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。