In the paper researches on a three-dimensional measure-Preserving mapping system are made, which is the three-dimensional extension of the Keplerian map-ping.

本文通过构造形式级数的方式，给出了一种三维保测度映射系统中一维不变流形和二维不变流形的计算方法。

youdao

Three linear array CCD are usually used to measure dimensional position of an object in noncontact position measuring system.

在一般的非接触式位置测量系统中，通常使用三个线阵CCD来测量物体的空间位置。

youdao

In order to measure the shape of three-dimensional objects, a non-contact system based on binary-code light projection method was developed.

建立了一个基于二进制编码结构光的三维形貌测量系统，推导了测量系统的物象关系式，并对测量系统进行了标定。

youdao

Crane devised a new measure of energy consumption: a three-dimensional unit he called a cubic mile of oil.

NEWYORKER: The Climate Fixers

At laboratories at the American Sports Medicine Institute in Alabama and the Hospital for Special Surgery in New York, orthopedists and biomechanists place dozens of sensors on pitchers and have them throw in front of a series of infrared cameras that measure their motions and turn the windup into a three-dimensional computer graphic.

WSJ: Baseball 2013: Here Come the Flamethrowers