台阶

Experimental results. show that the step number and ratio between the etching depth and the light wavelength are closely associated with the diffraction efficiency of reflection step grating.

初步试验表明，反射型阶梯光栅的衍射效率与台阶数、蚀刻深度与入射波长的比值均有密切相关。

Under the oblique incidence cases, the optical path difference of light beam distributed on the edge of steps can be calculated by using the geometric method. Then, according to the multi-slit Fraunhofer diffraction, the expression of diffraction intensity of reflection step grating is deduced.

针对反射性阶梯光栅，利用几何方法计算出斜入射情况下光束在台阶边缘的光程差的分布情况，根据多缝夫琅和费衍射推导出反射型阶梯光栅的衍射光强表达式。

They told a servant to be on the watch, and when a visitor should come, whom they should address as Honored Relative, to begin to wash the door-steps, using plenty of water.

他们被告知必须留意时间，有客人即将到来，看起来是有地位的亲戚。他们要用大量水清洁"门楼肚"的台阶

Computer optical element based on light-wave diffraction theory is through that etches on film base to produce relievo structure with two or multiple sidestep depths , and form pure phase and coaxial recurrence , so it has higher diffraction efficiency .

计算机光学元件基于光波衍射理论，通过在片基上刻蚀产生两个或多个台阶深度的浮雕结构，形成纯相位并同轴再现，使其具有极高的衍射效率。

The seed is the main factor of grain increase production, the country values seminal job very much, serve as project of executive seed industrialization countrywide commissariat remount is new 2000 the major move of step.

种子是粮食增产的重要因素，国家非常重视种子工作，把实施种子产业化工程作为2000年全国粮食再登新台阶的重大举措。

Taking this opportunity, we have made a great stride to the new step on the respect of "HD" reproducer.

我们抓住新世纪的发展机遇，使公司发展踏上一个新的台阶。

The results indicate that multisource fatigue core appear in the axe surface non-metallic inclusion distributing place by bending and retortion circle stress; The crack selevtivity expand to form the fatigue step along inclusion distributing route in the cut stress; The crack celerity expand to form the fatigue striation when puff part adequacy long in the positive stress.

结果表明：辊轴在弯曲、扭转循环应力作用下，表面非金属夹杂物分布位置出现多源疲劳核心；在切向应力作用下裂纹沿夹杂物分布路径选择性扩展构成疲劳台阶；当断面张开部分足够长时，在正向应力作用下发生快速扩展，微观形成疲劳辉纹。

By the time we got pretty tipsy. Rosanna more than I and I had to hold her constantly because she was inclined to fall down the small stair and into the botany.

但是漸漸我們有醉了，而Rosanna比我醉得更厉害，我必须一直抱着她，因爲她快要跌落小台阶掉到草蔥裏。

This step roughness is believed to be caused by the characteristic solution structure and crystal structure of CMTC.

这种特殊粗糙台阶的形成是由CMTC的溶液结构特点与晶体结构特点决定的。

Gradient,diameter,extra-deep,stem length, hole space ,row space and minimum resist line of borehole are analyzed in this paper.

主要分析了炮孔倾斜度、炮孔直径、超深和堵塞长度、孔距和排距、最小抵抗线等因素对爆破效果的影响，这对台阶爆破设计有一定的参考价值。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。