查询词典 double-curved surface

Its main working parts include the screw of eccentric helicoidsand the screw bush with a double-line helicoids on its surface.

螺杆泵是一种单螺杆输运泵，它的主要工作部件是偏心螺旋体的螺杆和内表面呈双线螺旋面的螺杆衬套。

Its main working parts include the screw of eccentric helicoidsand the screw bush with a double-line helicoids on its surface.

内容概述Overview 上海帕特泵业制造有限公司产生的螺杆泵是一种单螺杆输运泵，它的主要工作部件是偏心螺旋体的螺杆和内表面呈双线螺旋面的螺杆衬套。

Its main working parts include the screw of eccentric helicoidsand the screw bush with a double-line helicoids on its surface.

概述Overview 上海帕特泵业制造有限公司产生的螺杆泵是一种单螺杆输运泵，它的主要工作部件是偏心螺旋体的螺杆和内表面呈双线螺旋面的螺杆衬套。

The upper and lower unit open them one by one driving surface cover plate, double-check the drum gear and roller drive gear for the work of

末了不兵上下单位传动背的盖板一一敞开，澈底查抄滚筒传动齿轮和墨辊传动齿轮的处事环境

Through the research,it is found that both the Chinese causatives and the English causitives have double-core structrure at the deep layer.The two groups of causatives present similar features in the process of transforming from the deep layer to the surface layer.

通过研究发现，汉英致使句在深层都是双动核结构，从由深层向表层的转换过程中，两组句子表现出了相似的特点。

This paper adopts Goldak heat source model in which the distribution of heat on surface satisfied Gauss function and the inner heat distributes in double ellipsoids function.

因此焊接温度场的准确计算是焊接冶金分析，残余应力与变形计算以及焊接质量控制的前提。

For example: Inflates the screw, key, double head the spiral, inside and outside hexagon bolt, the horse-drawn vehicle screw, the hexagonal nut, locks the nut, flange surface nut, thin nut and so on.

不锈钢304、316各种德制、美制的六角螺母、盖型螺母、尼龙螺母、蝶型螺母、法兰面螺母、大型螺母、四方螺母、德制的内外六角螺栓。

When the ground surface at the entrance of tunnel is sloping,the structure of double-arch tunnel with half-open and half-hidden structure is an optimum pattern to be selected.

连拱隧道半明半暗结构形式是隧道洞口地表偏斜地段的一种优选方案，针对该种结构形式进行合理施工方法的研究较少。

A theoretical analysis was performed on a double extrapolation method to determin the intrinsic ionization constant of the amphoteric surface of colloid particles possessing the permanent charges.

采用双外推法，从理论上分析了带永久电荷的两性表面的胶体粒子的固有络合平衡常数。

The invention relates to a surface chemistry modified latex which can be obtained by carrying out radical polymerization in emulsion in the presence of at least one ethylenically unsaturated monomer or at least one polymer having ethylinically unsaturated residual bonds, at least one radical polymerization, at least one single, double or triple block polymer which is soluble or dispersible in water, comprising an active group at the end thereof, capable of forming a radical, and chosen from dithioesters, xanthates, thioether-thiones and dithiocarbamates.

本发明涉及具有改良表面化学性质的胶乳，它可以通过在以下物质的存在下进行自由基乳液聚合来获得：至少一种烯属不饱和单体或至少一种含残留烯属不饱和键的聚合物，至少一种自由基聚合引发剂，至少一种水溶性和/或水可分散的单嵌段、二嵌段或三嵌段聚合物，在其端部包括选自二硫酯，硫醚-硫酮，二硫代氨基甲酸酯和黄原酸酯中的能够形成自由基的活性基团。

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