The astronomers found an "X-ray mass" only a tenth of the mass found using the gravitational lens method.

天文学家发现“X射线估算的质量”仅有“引力透镜”方法估算的质量的十分之一。

youdao

Apparatus for conforming a planar film on an optical lens, method for functionalizing an optical lens by means of said apparatus, the optical lens so-obtained.

用于在光学镜片上成形平面膜片的装置，使用所述装置实现光学镜片的功能化的方法，由本方法所制得的光学镜片。

youdao

Objective: to observe the ultrastructural changes in the senile cataractous lens. Method: ultrastructural changes in senile cataractous lens was observed with transmission electron microscope (TEM).

前言：目的和方法：采用透射电镜观察老年性白内障晶体组织超微结构变化。

youdao

Then he discovered a new Japanese method of cutting diamonds: When viewed under a low-magnification (3x) lens, the stone refracted light in such a way as to give off a pattern of eight heart-shaped sparkles at the bottom of the diamond and eight arrow-shaped fire-bursts through the top--hence the name "hearts-and-arrows" diamonds.

FORBES: Stones on fire