Since our company established in 1997, bending ourself to manufacture the photics lens and eyeglass.本公司自一九九七年成立以来, 一直致力于光学镜头、镜片的制造.His solution : DAC Vision would develop its own state - of - the - art machinery for maki...
The optimum design method of involute internal gear slotting cutter is introduced.介绍了渐开线直齿内齿轮插齿刀的优化设计方法.The involute progression of hallucination is strange.幻觉的复杂的发展过程很奇特.This paper introduces calculation and measurement...
It's the story of a lovelorn girl whose suicide provokes bitter recriminations.那是个关于一名失恋的姑娘的故事,她的自杀引起了严厉的互相指责.The gas provokes respiratory problems among children and elderly people.这种气味在儿童和老年人当中引发了呼吸道问题.An act or e...
采用反吹法测定高纯氩气中大分子碳氢化合物,能够达到准确、快速测量高纯气体中大分子碳氢化合物的目的.Column switching - back flushing technique can realize accurate and fast measurement of macromolecular hydrocarbons in high - purity argon....