Pitching is angular motion of the vessel about what axis?（）.
胎头沿骨盆轴前进的动作为（）
The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?（）
胎头沿骨盆轴前进的动作称为（）。
骨盆倾斜度(inclination of pelvis)
漏斗骨盆(funnel shaped pelvis)
骨盆轴是指（）
骨盆轴指（）。
Angular motion about the vertical axis of a vessel is called（）.
如图蓝色平面即中骨盆平面，何为中骨盆平面(mid plane of pelvis)https://assets.asklib.com/psource/2014052718511132576.jpg
骨盆轴
一数控机床采用方式二回参考点,X轴在回参考点时,X轴运动但找不到参考点,而一直运动至碰到限位开关,CRT显示报警"X.AXIS.AT.MAX.TRAVE"。根据故障现象,判断故障原因。
骨盆轴的方向组成，正确的是()
骨盆(pelvis)
The parallel-axis theorem for calculating rotational inertia about a rotational axis is , where is the rotational inertia about the COM, M is the total mass of the rigid body, and h is the verticle di
Which type of anesthesia is mainly for many surgeries of the abdomen, pelvis, and lower extremities.
The relation of the earth on its axis is responsible for the_____of periods of light and darkness.
On a line chart, the x－axis is also called the dependent axis because its values depend on those of the y－axis.（)
Central longitudinal profile view of culvert is obtained by cutting the culvert with a vertical cutting plane along longitudinal axis of culvert and projecting to outside.（）
In lampbrush chromosomes of amphibian oocytes, most of the DNA is in the loops, which are actively transcribed, while the rest remains highly condensed on the chromosome axis, where genes are generally not expressed.
When determining the moment of a force about a specified axis, the axis must be along _____________.
