口径比

词组短语

aperture ratio

与口径比相关的网络例句 [注：此内容来源于网络，仅供参考]

This was a prototype weapon that bore more than a passing similarity to the prototype submachine guns designed couple of years earlier by Beretta in the process of developing the PM 12 submachine guns.

这是一个原型武器，口径比通过相似冲锋枪的原型设计，几年前的贝瑞塔在发展的下午12冲锋枪的过程枪更多。

But I have never seen a lower calibre of government than you have in this country.

但我从未见过较低的口径，政府比你在这个国家。

Results: After irradiation, the number of opened capillary and the caliber of arteriole in conjunctiva is increased.

结果 ：照射后与照射前比，球结膜毛细血管开放数、微动脉的口径、甲襞管袢数、袢长均有增加(P 。0 1)。

To meet the needs of detection of space faint objects for a telescope with large aperture and short focal,a binding drawtube telescope scheme to detect space object is presented to overcome the shortcomings that focal length grows and field of view shrinks with the increasing of aperture size in traditional telescope for space detection.The software methods are used to stack collected images to restrain background random noises and to improve image Signal to Noise Ratio and the detecting ability of the whole system.

为了满足空间暗弱目标探测对大口径、短焦距望远镜系统的要求，克服普通望远镜随着口径的增加焦距变长、视场变小的不足，提出了将多镜筒捆绑在一起对同一空域进行观测，通过软件的方式对采集的图像进行叠加来抑制背景随机噪声、提高图像的信噪比和系统的整体探测能力的设想。

As the plants grew for a longer time the cells in the phellem of the taproots become smaller in size and closer in arrangement and calcium oxalate crystal declined in quantity in the phelloderm of the taproots all the taproots had three secretory canals but on average the calibers of the canals gradually become smaller the parenchyma cracks in outer phloem and the xylem part near the root center gradually increased in size ,and the area ratios of phloem to xylem continuously decreased the vessel and vessel-layer numbers in secondary xylem of the transplanted .

不同生长年份的移山参主根结构具有一定差异：随生长年份的增长，木栓层细胞体积变小，排列趋于紧密；栓内层草酸钙结晶越来越少；分泌道均为3轮，但平均口径逐渐减小；韧皮部外侧和木质部靠近根中央处的薄壁组织的裂隙逐渐增大；韧皮部与木质部的面积比则不断下降；12年，16年生移山参主根次生木质部中导管数量和层数明显多于8年生。

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。

Moreover, since the strain energy of zigzag tubes is larger than that of the armchair tubes with the same semidiameter, the ends of the armchair tubes are easier to be closed than those of the zigzag ones. And the closed structures of the zigzag tubes have a lot of defects, even at 3000 K, there will be few carbon atoms flying away from them.

此外，由于锯齿型碳管应力能比同口径扶手型碳管的应力能大，使得扶手型碳管比锯齿型碳管更容易形成端口封闭的结构，且锯齿型碳管端口的封闭结构出现相对较多的缺陷，甚至在3000K下会有少最碳原子从端口飞离碳管。

The equipment provided with all necessary function of testing,not only can measu re the OTF of camera and afocal system, but also measure focal length, angular m agnification and transmission and so on.

杨红大口径可见光到红外波段OTF测试仪测量功能齐全，即可测量照相系统、望远系统的光学传递函数，并且兼有测量焦距、放大率和光谱透射比等参数的功能。

"Europe's inability to reduce its number of representatives and speak with one voice creates tensions with other major countries" at a time when the legitimacy and authority of international institutions is being challenged, according to Lorenzo Bini Smaghi, executive board member of the European Central Bank.

据欧洲央行执委会委员洛伦佐·比尼·斯马吉称，在国际机构的合法性和权威性遭到质疑之际，&欧洲无法减少其代表人数，也不能统一口径，使其与其它主要国家的关系面临紧张&。

Before conducting the study, students believed that Heat could not influence gas and liquid volume.Matter didn't have thermal expansion. Metal ring's diameter will shrink after heating. The melting quantity of salt is much quicker and faster than sugar in the same temperature or water. Only metals can conduct heat, but not wood, glass, plastics. The quantity of heat is by steam way disappearing.

一、学童对「物质与热」的迷思概念有：(1)「热对气体、液体体积不会有影响」的概念，(2)听过热胀冷缩的语词，但是对原因不明了，(3)金属双圆环加热后，内环孔的口径会变小，(4)同温度且等量水，盐的溶解量比糖多、也比糖快；(5)木材、塑胶、玻璃不会传热，金属才会传热；(6)以为热量是以水蒸气方式散失，(7)冷气机应安装在高处，冷房效果较佳；(8)误认为金属是良好的保温材质。

与口径比相关的网络解释 [注：此内容来源于网络，仅供参考]

aperture ratio：口径比

aperture 口径 | aperture ratio 口径比 | aplanat 齐酶镜

relative aperture：口径比

rejection 挑出废品 | relative aperture 口径比 | relative displacement 相对位移

relative boundary：相对边界

relative aperture 口径比 | relative boundary 相对边界 | relative cohomology group 相对上同岛

aplanat：齐酶镜

aperture ratio 口径比 | aplanat 齐酶镜 | aplanatic 消球差的