查询词典 focus tube

Nowadays Field emission display became the focus of the study of FPD, and it would be a replacer of cathode ray tube .

场发射平板显示器近来成为FPD的研究热点，将是阴极射线显象管产业进行产品更新换代的一种可能候选。

A 3" diameter x 4" long extension tube that mounts between the drawtube and 3" to 2" adapter provides the correct amount of back focus spacing for visual use with an eyepiece and diagonal.

一个 3"直径 x 4"展开在 drawtube 之间的延长管和 3"至 2"，适配器用一个目镜和对角线提供正确长度和后面目视用的焦点间隔。

In the present review, we focus on some of the recent advances and some key developmental events revealed in the fertilization process, including the role of the egg apparatus in guiding pollen tube orientation, sperm cell movement to their targeting cells, interaction between gametes, egg cell activation, and onset of embryogenesis and endosperm development.

本文着重讨论受精作用的若干重要发育事件，包括受精前卵器细胞对花粉管向胚珠定向生长的近距离引导信号，精子的靶向运动，精、卵细胞相互作用和配子融合后卵细胞的激活与中央细胞发育的启动等。

Because of the removable extension tube, the total back focus from focuser to image plane is an exceptionally long 220m.

因为可移去延长管，总计的后面焦点从对图像集中是格外长的220 m。

In order to analyze the internal rule of tube hydroforming, this paper introduces the history, recent development, focus and the main problems of the special process.

本文以深入研究内高压成形工艺的内在成形规律为目的，首先对内高压成形工艺的发展历史、国内外研究现状以及内高压成形工艺目前的研究热点和问题进行了介绍。

A tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam.

一端包含一个凸起的消色差透镜另一端在镜头的中心有一个小切口的小管；光线通过小切口成为平行光线。

The third winding is coupled between the primary winding and a capacitor to produce a current that controls a variation of a ratio between the focus voltage and the anode voltage as a function of variation in a beam current in the cathode ray tube.

在初级绕组和电容器之间连接第三绕组，从而产生一个电流，该电流用于对作为阴极射线管中电子束电流的变化的函数的聚焦电压与阳极电压之间的比率的变化进行控制。

Reflector telescope relative a larger diameter can be done, the main focus of the relative telescope diameter is about 15-125, even greater, Wang DC, inter Newton Telescope, the tube is longer than the system is much shorter focal length, coupled with the main mirror is only one apparent need for processing, which greatly reduces cost and manufacturing difficulties, there is currently greater than 134 meters diameter optical telescopes are all reflecting telescope.

反射望远镜的相对口径可以做得较大，主焦点式反射望远镜的相对口径约为15—125，甚至更大，而且除牛顿望DC远镜外，镜筒的长度比系统的焦距要短得多，加上主镜只有一个表面需要加工，这就大大降低了造价和制造的困难，因此目前口径大于134米的光学望远镜全部是反射望远镜。

X displays right pulmonary tuberculosis accounted for 30.4% the left lung accounted for 18.8% the double lung accounted for 50.8% between the lung nature venereal diseases changes the performance is two lung textures increases thickly the edge is fuzzy the lung hilus increases the disorganization accounted for 62.3%; The lobulous lung essence infiltration pathological change performance is in two lungs retires the inner tube spot laminated shape and the cloud cotton wool shape shadow the focus of infection fusion may assume the ground glass density to account for 30.5%; The lung section substantive infiltration pathological change displays for the boundary clear triangle or the fan-shaped big laminated high density was 7.2%.

胸部X线表现右肺病变者占30.4%，左肺占18.8%，双肺占50.8%，肺间质性病变表现为两肺纹理增粗，边缘模糊，肺门增大，结构紊乱占62.3%；小叶性肺实质浸润病变表现为两肺中、下野内带斑片状及云絮状阴影，病灶融合可呈磨玻璃密度占30.5%；肺段实质性浸润病变表现为边界清楚的三角形或扇形大片状高密度阴影占7.2%。

X displays right pulmonary tuberculosis accounted for 30.4% the left lung accounted for 18.8% the double lung accounted for 50.8% between the lung nature venereal diseases changes the performance is two lung textures increases thickly the edge is fuzzy the lung hilus increases the disorganization accounted for 62.3%; The lobulous lung essence infiltration pathological change performance is in two lungs retires the inner tube spot laminated shape and the cloud cotton wool shape shadow the focus of infection fusion may assume the ground glass density to account for 30.5%; The lung section substantive infiltration pathological change displays for the boundary clear triangle or the fan-shaped big laminated high density was 7.2%.

结果 7个月~1岁发病例数占4.3%；1~3岁占17.4%；4~7岁占46.4%；8~13岁占31.9%。咳嗽占100%；发热占63.8%；56.5%无肺部体征。胸部X线表现右肺病变者占30.4%，左肺占18.8%，双肺占50.8%，肺间质性病变表现为两肺纹理增粗，边缘模糊，肺门增大，结构紊乱占62.3%；小叶性肺实质浸润病变表现为两肺中、下野内带斑片状及云絮状阴影，病灶融合可呈磨玻璃密度占30.5%；肺段实质性浸润病变表现为边界清楚的三角形或扇形大片状高密度阴影占7.2%。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐