The size of the planet and its orbit can be worked out by measuring the frequency and size of these 'blinks'.
星球的大小和它的轨道是可以通过测量它的频率和闪现的大小算出来的。
The paper points out the application of two-frequency laser technique to the 3-coordinate measuring machine, the measuring principle and its features.
本文扼要叙述了双频激光技术在三座标测量机上的应用，介绍了其测量原理及其特点；
应用推荐