阀门

The paper introduces technologic features and confecting conditions of ester vulcanize water glass sand,discusses the importance and effect on improving quality and production efficiency of the products for application of ester vulcanize water glass sand in production of valve steel castings .

论述了在阀门铸钢件生产中，应用酯硬化水玻璃砂对提高产品质量和生产效率的重要作

Today, this location has been a fundamental change, the first is to build China's water technology products manufacturing aircraft carrier, to become the leader of China valve market.

如今，这一定位已经发生了根本性的转变，首当其冲的是打造中国水技术产品制造业航母，争做中国阀门市场的领袖。

Testing has proved this action provides up to 25% improvement in valve life and 50% reduction in water hammer.

实验证明这种作用使得阀门寿命延长了25%，水锤现象减少了50%。

Opening and closing speed as fast, and no water hammer phenomenon.

阀门所用材料应耐腐蚀，且符合饮用水的卫生条件。

More than an hour later, drained the water after maintenance Plug Valves workers found the risk of water not because of screw loosening, but the exhaust valve aging.

一个多小时过去了，维修工人把水抽干后才发现，冒水的原因不是螺丝松动，而是排气阀门老化。

For example, tower or pond water was inadvertently allowed to remain in a jacket and was valved shut.

例如，塔或池中的水不经意间进入夹套并使阀门关闭。

Valve to use wax paper or plastic film import and export of seal to prevent dirt inside.

阀门进出口要用蜡纸或塑料片封住，以防进去脏东西。

Valve in operation, the friction surface of the total amount of wear and tear.

阀门在操作过程中，摩擦的表面总的磨损量。

Silver brazing method: larger wire-bond or welding rod point in the valve in the pipeline sets seat.

银钎焊法：将焊线或焊杆点在阀门里的管道套座上。

Is the Ministry of Chemical Industry Corporation and China Chemical Whetstone sentinel manufacturers, the market resources of member units, the valves Association.

是化工部和中国油石化工总公司定点生产厂家，资源市场成员单位，中国阀门协会会员。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。