大量生产

MMA is produced by the method of acetone-cyanhydrin mainly in our country. The synthetic route is complex, the technical line is long, and the yield is low with high cost after many steps. Hydrocyanic acid is used as raw material, the treatment of numerous waste acid is difficult . Furthermore, concentrated sulfuric acid consumed in this method corrodes equipments and pollutes the environment seriously.

我国MMA的生产以丙酮腈醇法占主导地位，合成路线复杂，生产工艺长，多步反应后产率低，成本高，其采用有剧毒的氢氰酸为原料，产生大量难于处理的废酸，所消耗的浓硫酸对设备腐蚀性大，对环境污染严重，因此开发新的MMA工艺路线很有必要。

At recent decade, accompany with Surface Mount Technology printed-circuit board to produce fly of automation degree to soon develop, as to it's correspond of mass defect the inspection also put forward higher request, from in brief shoot to be like system to complicated 3-DX optics to examine system, the Automatic Optical Inspection is in great quantities adopt by the each production factory house.

摘要在最近十年，伴随着表面贴装印刷电路板生产自动化程度的飞速发展，对其相应的质量缺陷检查也提出了更高的要求，从简单的摄像系统到复杂的3-DX光检测系统，自动光学检测系统大量被各生产厂家采用。

In the traditional process,β-methylnaphthalene is oxidized with solution of chromic acid to give β-methylnaphthoquinone. However, a great deal of waste water with chromium will be produced in the process, which is very serious to environment. At the same time, the raw material consumption is great, which lead to the high production cost. Furthermore, by-product 6-methyl-1, 4-naphthoquinone will be produced, which is difficult to be separated completely and be utilized solely.

传统的生产工艺是用铬化物氧化β-甲基萘制备β-甲基萘醌，此工艺在生产过程中会产生大量的含铬废水，处理繁杂困难，对环境污染十分严重，并且原料消耗大，成本高，反应过程中的副产物6-甲基-1，4-萘醌未能加以彻底分离和利用。

In 1998 to 1999 two years, the factory to take a large number of orders: If PC multimedia stereo matching parts production and assembly; telephone shell production and assembly; receiver; disk accessories; mobile phone charger; high-end CD boxes and CD rack and so on.

在1998年至1999年二年中，工厂承接了大量的订单：如PC配套的多媒体音响的部件生产及装配；电话机外壳的生产及装配；受话器；磁盘配件；移动电话充电器；高档CD盒及CD架等等。

The carton computer proofing machine could complete the cutting、indentation and forming of paper without knife mould and die-cutting machine,so saved lots of accessories and cost of human resource; nevertheless,if the design of the carton is not satisfied, can be modified at any time, as do with the change,begin high-volume production after comfirmed that products meet customers' requirements will help to reduce production waste,but also help your company sales to get orders,supply better customer service.

纸箱纸盒电脑打样机它无需刀模、无需模切机即可完成纸品的模切、压痕、成形，节省大量的刀模、模切机及人力成本；此外，如对设计的盒形不满意，可随时修改，随做随改，确认产品符合客户要求后再进行大批量生产，既有利于减少生产浪费，又可以帮助贵厂业务员争取客户订单，更好地服务客户。

The cause for the fracture of phosphor bronze strip during rapid cooling for removing the scales on its surface is studied.

阐述了在实际生产过程中，因大量使用镀白旧料生产锡磷青铜带材，在急冷破鳞时易出现开裂现象及其产生的原因。

By this point of the forecast period, production for a number of high-volume procurement programs will be nearing an end, and many of the production ramp-ups for once-new rotorcraft models will have crested.

在这一预测时期内，一批大量采购旋翼机的项目生产将接近尾声，许多全新类型的旋翼机生产将达到顶峰。

New production technology of a solid acid catalyst for biodiesel production A solid acid catalyst of outstanding performances has been produced with this technology utilizing amylose , glucose and saccharose abounding in the nature through simple burning and sulfonation processes .

新型生物柴油生产用固体酸催化剂生产技术本技术利用自然界大量存在的多糖，葡萄糖和蔗糖等经过简单的灼烧磺化制备出性能突出的固体酸催化剂，该催化剂不溶于水，乙醇，甲醇，植物油脂和生物柴油。

Because of the development of chemical fabric, rising of artificial technology and making progress of technology, which are the reasons of making a amount of the difficult biochemistry degrade of PVA serosity, artificial silk alkali solve matter and new-type auxiliary thing to enter into dyeing wastewater in recent years, and COD rises 2000-3000mg/L.

近年来由于化学纤维织物的发展，仿真丝的兴起和印染后整理技术的进步，使PVA浆料、人造丝碱解物、新型助剂等难生化降解有机物大量进入印染废水，使COD浓度从原来的数百毫克每升上升到2000-3000mg/L，从而使原有生物处理系统COD去除率从70%下降到50%左右，甚至更低，传统的生物处理工艺受到严重挑战，作为纺织品的生产，其生产过程关系到人们生活的大环境。

Women's time allocated to housework does not decrease a lot as their time on farm work decreases from busy season to slack season.

其次，虽然多数的妇女在农场上辛勤的工作，她们在家务劳力上投入的时间并不因为农务淡季而大量减少，而且她们有贬低自己在农业生产中扮演的地位以及农业生产贡献的倾向。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。