Exploration programmes are based on drilling for the stratiform deposits along projections of established trends . 勘探计划依靠钻探，钻探层状矿床沿着已知走向的延伸部分进行。
Dehn showed how a presentation of the group of a knot can be read off from a projection of the knot into a plane . Dehn指明了一个纽结的群的一种表示如何由该纽结在平面上的一个投影看出。
The crank reference pulse originates from a variable reluctant pickup which senses a projection on the engine's flywheel . 曲柄参考点脉冲信号由一个变磁阻传感器产生，它从发动机飞轮上的突起感受信号。
A projection is defined as any orderly system whereby the meridians and parallels of the spheroid may be represented on a plane . 投影是一种有规律的方法，用来把椭球面上的子午圈和平行圈映射在一个平面上。
It should be noted that additive production of color is despondent upon the individual projection of each primary onto a common screen . 应该指出，颜色的加色成色作用是以将每种基色分别投影到同一屏幕上为基础的。
One instance of simple harmonic motion is that of the projection on any diametre of a point which describes a circular path with uniform angular velocity . 当一质点以匀角速度作圆周运动时，则它在任意直径上的投影的运动便是简谐运动的一例。
He seated himself on a projection of the rocks, whence he gave no other signs of consciousness than by the struggles of his spirit, as manifested by infrequent and heavy sighs . 他独自坐在一块突起的岩石上，除了不时伤心地深深叹口气，流露出他精神上的痛苦外，毫不显出有知觉的模样。
At a short distance from the shore they turned, and were soon concealed by the projection of the bank, under the brow of which they moved, in a direction opposite to the course of the water . 离岸没多远，他们就改变了方向，人马都被河岸的阴影给隐蔽住了，他们沿河岸边的悬岩逆着水流前进。
Amin needs to make a projection of the world grosses 阿明需要对总额做一个评估
Fast algorithm of image matching by projection 基于投影特征的图像匹配的快速算法
