工艺过程

The product quality, yield and the energy consumption of column will directly influence by the design and function of NGL fractional column .

天然气凝液分馏是天然气凝液回收工艺过程的重要组成部分，凝液分馏塔的设计和运行是否合理，将直接影响产品质量、产品收率和塔运行能耗。

The resistance spot welding process and character of galvanized steel is analyzed according to the experiment .

根据实验分析了点焊镀锌钢板的工艺过程及特点。

The hazardous substances in welding and allied processes have two kinds of states,which including graininess and gaseous state.

焊接及其相关工艺过程中的有害物质有2种形态，即颗粒状与气态。

The change of mechanical properties and crystalline parameters during graphitization were also obtained.

研究结果表明，在制备沥青基炭纤维工艺过程中，各向同性沥青纤维的最佳氧的质量分数为19.63％，而各向异性沥青纤维的最佳氧的质量分数为8.03％。

Temperature is controlled in heat treatment craft , is a very important link .

温度控制在热处理工艺过程中，是一个非常重要的环节。

Temperature in heat treatment craft is very important.

摘要温度控制在热处理工艺过程中，是一个非常重要的环节。

The method comprises:(1) weighing lead acetate hexahydrate and thioacetamide, and preparing aqueous solutions respectively, so that the concentration ratio of Pd2+ to S is 1:(1-4);(2) adding acetic acid into thioacetamide solution to adjust the pH value to 2-4;(3) adding poly surfactant into lead acetate solution, ultrasonicating to mix uniformly and obtain a colorless and transparent sol;(4) mixing the sol and thioacetamide solution;(5) placing the mixed solution in a sealed container, irradiating by 2.5 MeV and 40 mA electron accelerator with irradiation dose of 25-40 Mrad;(6) washing the product, centrifuging for separation, and drying to obtain black PdS nanoparticles.

本发明方法的工艺过程如下：首先称取一定量的六水合醋酸铅和硫代乙酰胺，各自配制成水溶液，其浓度比为使其中的铅离子浓度与硫原子浓度的比例为1∶1～1∶4；在硫代乙酰胺溶液中加入适量醋酸调节其pH值至2～4；醋酸铅溶液中加入少量表面活性剂聚乙烯醇，然后超声振荡，混合均匀，制成无色透明溶胶；随后将溶胶与上述的硫代乙酰胺溶液混合；将该混合液置于密闭容器中，并将其放置于2.5MeV、40mA的电子加速器产生的电子束辐照下进行辐照处理，其辐照剂量为25～40Mrad；然后将反应生成物清洗，并用高速离心机离心分离，然后干燥，最终得到黑色纳米硫化铅颗粒。

The clean synthesis of 1,6-dicarbamate hexane from dimethyl carbonate and 1,6-diamine hexane is studied.

对由1，6-己二胺和碳酸二甲酸合成1，6-六亚甲基二氨基甲酸甲酯的洁净化工艺过程进行了初步研究。

hhc filling process of RT M for the two step 3D braid shell prcform with a varying section.

采用分段一集合计算方法，对二步法三维编织变厚度变截面薄壁壳体RTM充模工艺过程进行了较深

Pickling can be done in batch or continuous processes typically using hydrochloric, sulfuric, nitric or hydrofluoric acid.

酸洗可以通过批量或连续工艺过程来进行，典型的方法是使用盐酸、硫酸、硝酸和氢氟酸。

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