查询词典 apertures

The various functions of the apertures are essential to the shielding box. Electromagnetic pulse couples into the shielding box through the "back-door coupling", which inevitably interferes with or damages the electronic components used in the shielding box.

而屏蔽机箱上各种功用的孔缝是必不可少的，电磁脉冲通过&后门&耦合进入屏蔽机箱，并对其内的电子元器件进行干扰或毁伤则是不可避免的，也是电磁脉冲进入屏蔽机箱的重要途径之一。

It is used mainly for filling irregular space and apertures in thermal insulation structure, spraying for fire proof of steel structure building and manufacturing sound-absorbing ceiling board.

粒状棉是由矿岩棉纤维制成的颗粒状产品，主要用于保温工程不规则空间、保温缝隙等填充，钢结构建筑防火喷涂，以及矿棉吸音天花板制造等。

This paper summarized the study and application state of the dry deep screening (6mm, 3mm) theory and screening equipments of moist fine coal and flip—flow screen, elaborated the machanisms which the elastic screen surface overcomes blinding apertures, proposed a new dry deep screening (6mm, 3mm) theory of moist fine coal, studied the sophisticated phenomenon which particle moves on screen surface.

本文综述了潮湿细粒煤炭干法深度（6mm，3mm）筛分理论、筛分设备及弛张筛的研究与应用现状，阐述了弹性筛面克服潮湿细粒煤炭筛分的堵孔机理，提出了潮湿细粒煤炭干法深度筛分的新理论。

The lens axicon is based on the use of the spherical aberration of the mirror surfaces,which is inexpensive and easy to manufacture into a element with large apertures as compared with diffractive axicons,refractive cone axicons,and earlier lens axicons with aspheric surfaces;the opaque disk can offer the Bessel beams with long non-diffracting distances,and the diameter of the central peak is adjusted by choosing the focal length of the collimating lens;the tunable fluidic conical lens is a new device for generating Bessel beams,which can obtain the Bessel beams with different parameters by varying the refractive indexes of the solution which is filled in the device.

双透镜轴棱锥法主要基于透镜球面像差的运用，与衍射轴棱锥、折射轴棱锥和早期的非球面轴棱锥相比，具有加工简单、便宜，易于制作大尺寸的特点；不透明障碍物法得到的贝塞尔光束具有很长的无衍射距离，其直径可通过选择不同焦距的准直透镜来得到调节；可调流体轴棱锥是一种产生贝塞尔光束的新型器件，它可以很容易地通过改变注入器件的液体的折射率来得到不同参量的贝塞尔光束。

Physical model of computer box is established and through analyzing the changing curves of change of electromagnetic field with time and change of coupling coefficient with frequency, the coupling regulation of electromagnetic on computer box is obtained. It is as follows: electromagnetic pulse has a great effect on components of computer box through apertures and slots, the coupling energy in the box increases first and then decreases. The existence of components decreases the shielding effectiveness and resonant frequency.

建立计算机机箱的物理模型，通过分析机箱内的电磁场随时间的变化曲线和耦合系数随频率的变化曲线，得到电磁脉冲对计算机机箱的耦合规律：电磁脉冲可以通过孔缝进入机箱内部，对机箱内元件的瞬间影响较大；机箱内的耦合能量是先增加后减小；元件的存在使得机箱的屏蔽效能降低，谐振频率下降。

I'll also be using wide-ish apertures.

我还会想到使用比较大的光圈。

Different sizes and shapes of apertures can be created to produce different volumes of deposits.

不同的孔型和不同大小的孔可形成不同的沉积物

This is the same subject photographed at the three apertures.

这是在拍摄同一主题的三个孔。

In very large apertures, there is also a problem of

在非常大口径的折光镜，还有

It was recently discovered that arranging apertures in just the right way created an amazing new optical effect.

这是最近发现，在刚刚安排光圈以正确的方式创造了一个惊人的新的光学效应。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。