您要查找的是不是：
- principal planes of bending 弯曲主面
- principal plane of bending 弯曲主平面
- principal plane of extraordinary rays 非常光主(轴)平面
- principal plane of ordinary rays 寻常光主(轴)平面
- The act or posture of bending low or crouching. 下蹲，蹲伏下蹲或蹲伏的动作或姿势
- Phase Matching for SHG in Principal Planes of Biaxial Crystals 双轴晶体主平面上倍频的相位匹配
- Parallel to or in the plane of the horizon. 水平的与地平面平行的或在地平面中的
- In the act of bending down, he slipped and hurt his back. 他一弯腰滑倒了，跌伤了背。
- This species has reached a higher plane of development. 这一种属已达到更高的发展阶段。
- He's too fond of bending the elbow. 他太贪恋杯中物了。
- Be careful of bending that spoon. 当心别把汤匙弄弯。
- Do planes of this make crash very often? 这种牌子的飞机经常坠毁吗?
- Shear force is implicit in the development of bending moments. 杆中的剪力在弯矩的推导中是不明显的。
- The road straightens (out) after a series of bends. 这条路经过几个转弯之後就直了。
- He has a small plane of his own. 他有一架自己的飞机。
- Medial Toward the median plane of the body. 靠近身体正中面。
- What is the plane of the buffing? "抛光抛到什么程度?"怎么翻译?
- In every state of stress there exist at least three principal planes, which are mutually perpendicular. 对每一种应力状态，至少存在三个主平面，它们互相垂直。
- This is the plane of the Monad, or oversoul. 这是单体层，或超灵层。
- In the act of bending down,he sliped and hurt his back. 他一弯腰滑倒了，跌伤了背。
