1) vertex formulas
镜顶焦距
2) vertex focal distance
顶焦距
3) front vertex focal distance
前顶焦距
5) lens focal length
透镜焦距
1.
The methods for measuring lens focal length and spherical curvature radius at presentare summarized, and the principle of the collimated beam compensation method for measuring lens focal length and spherical curvature radius is introduced and it is indicated that the key of this metbod ischeck on the collimation of compensation beam.
概述目前透镜焦距及球面曲率半径的测量方法，介绍透镜焦距及球面曲率半径的准直光束补偿测量法的原理，指出该方法的关键是对补偿光束准直性的检测。
6) focal length
透镜焦距
1.
The single beam s coupling efficiency is the key to the combined output power in incoherent fiber laser beam combination system,which is affected by focal length of lens,grating period and light spot radius.
单光束耦合效率是决定非相干组束系统输出功率的关键,它受到透镜焦距、光栅周期和光斑半径等参数的影响。
2.
By using the CCD sensor as the detector,the focal length can be automatically measured and real time displayed.
在透镜焦距测量中 ,利用线阵 CCD光电传感器作接收器 ,能够对透镜焦距实现在线自动测量和显示 ,并介绍该测量系统的工作原理、软硬件设计、测量误差及结果分析 。
补充资料：前顶
前顶 前顶 经穴名。出《针灸甲乙经》。属督脉。在头部，当前发际正中直上3.5寸（百会前1.5寸）。额神经分支和枕大神经分支的会合处，并有左右颞浅动、静脉吻合网。主治癫痫，头痛，眩晕，鼻渊，目痛，颜面浮肿，小儿惊痫等。沿皮刺0.5-0.8寸，艾条灸5-10分钟。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条