查询词典 diameter

Learning from double metal complex structure and multilayer over high-pressure container,double layer SAW with large diameter was designed,this will enhance pipe holding pressure capacity,so it can improve pipe transmission capacity.

受双金属复合管结构和多层超高压容器的启示，设计了一种大直径双层埋弧焊管，拟从结构上提高钢管的承压能力，从而提高管道的输送能力。

At least four types of photoreceptors could be identified in the retinal red rod, green rod, single and double cone. The ganglion cell fell into three groups according to its diameter: small ganglion cell (diameter0μ), median gan...

中央凹和视条纹上的节细胞密度分别为 2 2 0 0 0个/mm2 和 2 0 0 0 0个/mm2 。4 不同类型的神经节细胞在视网膜上的分布明显存在区域差别，中央区小型节细胞占94 %以上；大型节细胞主要分布在周边区。

The use of pre-used triangular belt transmission, the power machine spindle and pumps must be parallel to pulley alignment, in which the center distance of not less than the diameter of the pulley and two double.

使用前的准备①采用三角皮带传动时，动力机主轴和水泵必须平行，皮带轮要对齐，其中中心距不得小于两皮带轮直径之和的两倍。

In this thesis, terahertz transmission properties through three kinds of simple sub-wavelength metallic structures, including single sub-wavelength metallic circular hole, single sub-wavelength metallic slit and double sub-wavelength metallic slits, are experimentally investigated in the far field by using our own THz time-domain spectroscopy system and are theoretically analyzed. Conclusions are obtained as follows:(1) a single sub-wavelength metallic circular hole exhibits the same terahertz transmission properties as that of round metallic waveguide, which are influenced by the diameter of circular hole and the thickness of metal foil.

本文利用本实验室搭建的太赫兹时域光谱系统研究了太赫兹波段金属亚波长结构的透射特性，其中对三类金属亚波长简单结构即单个金属亚波长圆孔、单个金属亚波长狭缝和金属亚波长双缝的太赫兹透射现象进行了远场探测以及理论上的分析，得到了以下一些成果：(1)太赫兹波通过单个金属亚波长圆孔的传播现象与圆形金属波导具有相同的规律，其特性受到圆孔直径和金属箔厚度的影响。

We can infer through analysing the inheritance of some characters of chrysanthemum that the expression of flower color of hybrids somewhat trended to that of female parents,plant height was of definite heredity advantage,the expression of flower diameter and flower doubleness had a declined Irendency.

通过对菊花若干性状的遗传分析可知，菊花花色具有偏母性遗传的倾向，株高具有一定的遗传优势，花径和重瓣性具有趋小性退化的趋势。

The phenomena that over parent individuals color ,plant height ,flower diameter and flower doubleness emerging are beneficial to the choice of new cultivars .

杂种后代中黑心和绿心颜色不产生分离，花色、株高、花径和重瓣性性状分离广泛，有利于新品种的选择。

The seeds could not be stored for a long time and the number of germination was 50% or so when seeds were cold stored . We can infer through analyzing the inheritance of some character of Gerbera jamesonii that the expression of red flower color of hybrids somewhat trended to that of female parents , plant height、flower diameter and flower doubleness had a declined tendency .

通过对杂交组合F1代的部分性状遗传变异情况分析可知：非洲菊舌状花瓣的红色具有偏母性遗传的倾向；单瓣性具有一定的遗传优势，重瓣型不具有遗传优势；杂交F1代的株高和花径呈趋小性衰减的趋势。

The large variety in Fl hybrid occured.The phenomena that overparent individuals of some characters in lower color.plant height,flower diameter and flower doubleness emerging are beneficial to the choice of chrysanthemum breeding.

杂交后代的性状出现了广泛的分离，花色、株高、花径、重瓣性等性状都有超亲遗传的现象，有利于菊花育种的选择。

Objective: To study the stress distribution of one segment type mono dowel implant with various length and diameter in alveolar bone.

目的 ：明确一段式单桩螺旋形种植牙的骨组织形态、硬度与应力的关系，指导种植体的设计与运用。

The ratio of downcomer to riser cross sectional area, the bottom clearance and the ratio of height to diameter of the reactor are proved to be important of the cell growth behavior.

下降室和上升室的截面积比，底部系数，高径比这些几何参数和表观气速都与细胞的生长紧密相关。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。