加工方法

The main method of separation used in refineries is fractional distillation , although further processing is normally required to produce marketable petroleum products .

炼油厂所使用的主要分离方法是分馏，不过分馏所得一般都需要一步加工才能成为可供销售的石油制品。

In combination with oscillation free uniform B-spline interpolation, a pre-controlled optimal synthesis of tool-path arrangement is realized. Furthermore, the practicability and efficiency of the synthesis is verified.

2提出并实现了基于直线插补的净边界切削和基于Hermite插补的光滑过渡法的未加工边界切削二种刀具转向处理方法，完善了刀具轨迹规划。

"Major tea types are classified by processing method: fermented, or black, tea produces an amber-colored, full-flavored beverage without bitterness;"

根据加工的方法不同而分成几个大类：发酵茶，或称红茶，生成琥珀色的、不带苦涩的、口味浓郁的饮料

In a scientific basis and form of information gathering and processing methods so as to create an interlocking system.

在这些科学的基础上，形成信息收集和加工的方法，从而形成一个纵横交错的系统。

To solve the above problem, for less demanding accuracy, size, modulus relative to similar client who can use the standard spur gear cutter, knife method of molding processing.

针对以上问题，对于精度要求不高，大小端模数相差不多者，可以用标准正齿轮铣刀，一刀成型的方法加工。

By using the profile modeling machining equipment of helix angle, a new method about grinding rake face of gear cutter hob on tool grinder is presented.

提出一种用螺旋角仿形加工装置在工具磨床上刃磨齿轮滚刀前刀面的方法。

In view of the fact that products cann't meet design demands when processing products with arc generatrix shape in centerless grinding, the design of copy rule was introduced,calculating formula was also presented.

针对用无心磨削的方法加工凸圆弧型外径素线的产品时存在的产品与设计不符的现象，重点论述了仿形尺的设计，给出了计算公式。

The features to evaluate the tooth contact quality such as the location of the contact point on the tooth surface, clearance between the meshing tooth surfaces, curve of the transmission error and the path of the contact point are investigated. The accurate geometric representation with non-uniform rational B spline of the worm and the wheel tooth surface is presented then the corresponding program is developed.

根据平面包络环面蜗杆传动的创成方法，建立了包含加工误差的蜗杆和蜗轮的齿面方程，分析了平面包络环面蜗杆传动和平面二次包络环面蜗杆传动的刚性啮合特性如误差对接触点的位置、齿面间隙、传动误差曲线和接触点在齿面上的轨迹的影响。

So there is no global design trade off between memory usage and processing speed, at least with this proven algorithm.

所以没有全球设计的内存使用之间的贸易和加工速度起飞，至少在这个行之有效的方法。

Abrasive disk for accurately grinding TI worm,as well as grinding method similar to that for globoid worm or planer enveloping hourglass worm,is used to machine hourglass worm,making the TI worm match with the worm wheel which has the same tooth surface shape as that of abrasive disk,and thus forming a new-style worm gearing .

采用精确磨削TI蜗杆的砂轮，用类似直廓环面蜗杆或平面包络环面蜗杆的磨削方法加工环面蜗杆，使该蜗杆和齿面形状与砂轮曲面相同的蜗轮相配合，形成一种新型蜗杆传动，给出了这种传动蜗杆副齿面的数学模型，并通过计算机仿真得出了这种传动蜗轮齿面上接触线的形状及分布特征，初步分析了其啮合特点。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。