阀门

Instead of straight travel valve trend Because rotary valve in many cases can replace the straight travel valve, and straight travel valve, compared rotary valve has many advantages (see Part 1 of this article).

2代替直行程阀门的趋势因为旋转阀在许多情况下可以替代直行程阀门，与直行程阀门相比，旋转阀具有许多优越性（见本文第1部分）。

I think that China is a very good valve portal valve trading platform as a gateway in this respect and thoughtful consideration of comparison, in the portal where the valve key words so I do not think advertising can achieve very good results.

我认为中国阀门门户是一个很好的阀门交易平台，因为门户在这方面考虑的比较周到，在门户里做阀门关键词的广告我认为能达到很好的效果。

Currently about 10% of the valve industry has a market occupied by foreign enterprises, China General Machinery Industry Association valves Branch of the stakeholders that in order to change this situation and improve the quality of the valve is the key.

目前阀门行业有10%左右的市场被国外企业占领，中国通用机械工业协会阀门分会的相关人士认为，要改变这种现状，提高阀门质量是关键。

First, open and close the valve manually Valve is the most widely used manual valve hand wheel or handle it, is in accordance with the ordinary human to design, consider the sealing surface of the strength and the necessary closing force.

一、手动阀门的开闭手动阀门是使用最广的阀门，它的手轮或手柄，是按照普通的人力来设计的，考虑了密封面的强度和必要的关闭力。

A open and close the valve manually Manual valves are the most widely used valve hand wheel or handle it, is designed in accordance with the ordinary human, and to consider the sealing surface of the strength and the necessary closing force.

手动阀门的开闭手动阀门是使用最广的阀门，它的手轮或手柄，是按照普通的人力来设计的，考虑了密封面的强度和必要的关闭力。

A open and 关上 the valve manually Manual valves are the most widely used valve hand wheel or handle it, is designed in accordance with the ordinary human, and to consider the sealing surface of the strength and the necessary closing force.

手动阀门的开闭手动阀门是使用最广的阀门，它的手轮或手柄，是根据平凡的人的劳力来预设的，思量了弥缝面的强度以及必要的关闭力。

The former concerns whether the valves operate normally, and the latter is not only related to the capability of headstock gear and valve structure, but also related to the reliability and flexibility of valve's operation.

前者关系到输水阀门能否正常运行，而后者不仅关系到阀门启闭机的容量和门体结构，而且涉及阀门运行的可靠性和灵活性。

Sealing Valve valve sealing performance Filter is part of the sealing ability to prevent media leaks, it is the valve of the most important technical performance indicators.

密封性能阀门的密封性能是指阀门各密封部位阻止介质泄漏的能力，它是阀门最重要的技术性能指标。

Important: When returning any cylinder, ensure that the cylinder valve is properly closed, the outlet seals are in place and properly tightened, and the valve protection cap is correctly installed.

在返还钢瓶之前，要确保钢瓶阀门正确关闭，阀门排气口密封在正确的位置而且已经上紧，和已经安装了阀门保护帽。

Open the vacuum pump when all the equipment are normal, vacuum 0.8-0.9MPa for Etherification kettle 1, and open the inlet valve (filter and inlet valve of Esterification 1), then the vacuum will inhale the quantitative material into reaction kettle 1 by passing the filter, and close the inlet valve of raw material after it.

在所有设备正常的情况下打开真空泵，将1号酯化釜抽真空至0.8-0.9MPa，然后打开进料阀门，（过滤器及1号酯化釜的进料阀门）真空将定量的物料经过原料过滤器吸入1号反应釜。进料完毕后关闭原料进料阀门。

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。