Dimension of valve stem head 阀杆头部尺寸
steering stem head 转向柱头部
steering stem head bolt 转向柱头部螺栓
steering stem head washer 转向柱头部垫圈
head and stem assembly 机头头杆组件
Long-stem bipolar femoral head 加长柄人工股骨头
N the head of the stem of a vessel 艏柱头 [nautical]
The vests will not protect drivers from head wounds, but data shows that the vast majority of attacks stem from knife attacks or gunshots to the drivers' lower back or side.
虽然防弹背心不能保护司机的头部，但数据显示，在大部分司机遇袭事件中，司机的背部下方或侧面受刀伤或中弹。
This behavioral asymmetry is thought to stem from the same preference for head turning during the final weeks of gestation and during infancy.
这种方向上的不对称性似乎是源于妊娠后期及婴儿期转头的偏好。
When the closed channel, the wedge-shaped head with a stem to open up the ball and pressed to seal the valve seat.
当关闭通道时，用阀杆的楔形头使球体涨开与阀座压紧达到密封。
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