查询词典 angular aperture

By means of the Fourier series expansion,an app roximate analytical propagation equation of flattened Gaussian beams passi ng through an apertured paraxial ABCD optical system is derived,and illustr ated with numerical examples,when the transmissivity of the aperture is T=cos.

用傅里叶级数展开法研究了平顶高斯光束通过有光阑限制的近轴ABCD光学系统的传输特性，导出了光阑透射率为T =cos时的近似解析传输公式，硬边光阑的情况可作为Ω=0的特例得到。

It is the first time that these phenomena were observed: Two nuclei are surrounded by plasma and locate at the central of the female gametophyte and the others nuclei are positioned at the fringe of the female gametophyte; Before the pollen tube enters the female gametophyte. the nuclei in chalazal end begin splitting of plasma and form multinuclear cell.4. The pollens of Gnetumc are spherical or applanate with single aperture. The ornamentation of exine is spine. The basis part of spine is lenience and the top part of spine is tip or obtuse sphere.

首次在买麻藤属植物的雌配子体中观察到2个游离核位于配子体的中央位置，且被一团原生质所包围的，其余的游离核位于边缘的现象以及花粉管进入雌配子体前，合点端的核已经发生胞质分裂形成多核细胞的现象 4、买麻藤的花粉近球形或扁平型，有单萌发孔，外壁表面具小刺状纹饰，小刺基部宽大，末端尖或钝圆。

After in art things business the shop buys canvas, above put apart the knife mark with tens of fine point, inside the aperture that inserts arboreous illume electric lamp one by one feed mark to stay next.

在美术用品商铺购买帆布以后，在上面留出数十处细微的刀痕，然后将树木照明电灯一个一个地插进刀痕留下的孔里面。

In order to obtain pockety aperture, this paper prepares inorganic membrane with choosing diatomite of TengChong. The quality of this choosing diatomite is alterd by adding argentic oxide to improve its sorption capacity of ammonia and separate effect of ammonia water. Diatomite is choosed through the experiments of ultrasonic.

本文用精选后的腾冲硅藻土来制膜，力求使膜的孔径分布均匀，同时用氧化银来改性硅藻土来改变硅藻土对氨的吸附能力，提高氨／水分离效果。

Mirror telescopes of Newtonian, Cassegrain and Schmidt designs included models up to 1.25 meter aperture in single, or double or even triple configurations for astrographic applications.

还生产牛顿型、卡塞格伦型和施密特型镜面反射望远镜，包括物镜口径达到了1.25米的单筒的、双目的和&三眼&的型号，供专业天文定位使用。

Balas breed fructification, go up to form Brown circle spot for the center with leather aperture in fruit face more, brim clarity, cave a bit, but not thorough pulp, only cuticular below a few cells become angry.

红玉品种果实，多在果面上以皮孔为中心形成褐色圆斑，边缘清楚，稍凹陷，但不深入果肉，只表皮下几层细胞变色。

Come so, make assist, belletristic magazine and those board the literature of division of appropriative writer domestication edits aperture having a face, completely can absurd went.

这样一来，作协、纯文学杂志以及那些板起脸孔充当作家驯化师的文学编辑，统统可以见鬼去了。

Similarly, a pit organ's aperture is about 1 mm—large enough to allow the snake to quickly detect moving prey. Some scientists even suggest that pythons—a type of boid—have a variety of differently shaped pit organs, each serving a different biological function.

响尾蛇及蟒蛇这两种类型的蛇具有这种能力，它们身体上的感热膜能够探测运动中的被捕食者与周围环境的温度差，例如，能够探测跑动中的老鼠与周围环境仅千分之一开氏温度的差别。

Integrated analysis of optical and mechanics in larger aperture catadioptric optical system ［J］.

大口径折反射式光学系统的光机结合分析［J］。

Integrated analysis of optics and mechanics in larger aperture catadioptric optical system［J］.

大口径折反射式光学系统的光机结合分析［J］。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我