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Therefore, the torque required to open the gate valve required torque than the closure of large, in addition, for a pair of contact between the sealing surface, the Non Rising Stem Resilient Seated Gate Valves coefficient of static friction between them than the dynamic friction coefficient, to make them from the static state generate the relative movement is required to exert greater force to overcome the static friction; due to temperature changes, so that the sealing surface pressure between the larger, need to overcome the static friction force also will be bigger, so that when you open the valve on the stem nut on the sometimes increase the torque exerted a lot.

所以，开启闸阀所需的力矩比关闭闸阀所需的力矩大，此外，对于一对互相接触的密封面来说，它们之间的静摩擦系数也比动摩擦系数大，要使它们从静止状态产生相对运动，需施加较大的力以克服静摩擦力；由于温度变化，使密封面间的压力变大，需要克服的静摩擦力也随之变大，从而使开启闸阀时，对阀杆螺母上施加的力矩有时会增大很多。" Moment analysis of valve operation "是由中国闸阀网提供的国际阀门新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索：闸阀型号、闸阀价格、闸阀技术、闸阀新闻、闸阀生产商等。

Your eyes close,I die;your eyes open ,I come back to life. Your eyes close and open again and again ,I die again and again.

你的眼睛闭上，我就死了，你的眼睛睁开，我又活过来了，你眼睛眨呀眨，我就死去活来。

There had been no open complicity between mother and daughter, no open understanding.

母女之间并没有公开同谋，也没有坦率的协议。

The grownups always tried to confute me with some sort of scientific explanation, saying that baby's eyes could not be open anyways, even they were open, they could not possibly see things clearly enough to remember them.

大人门总是想用一种科学的解释来反驳我，他们说刚出生的小孩眼睛不可能是睁开的，就算是，也不可能把周围的东西看清楚到能够记住。

According to the practical project "Research on the mechanical optimization of the slope configuration for the Jinduicheng open pit " which the author has engaged in, study on the oval-shaped deep-concave open pit slope with the convex curve has been presented in this thesis.

论文作者通过参与导师《金堆城凹陷露天矿边坡形状力学优化研究》项目所做的研究工作，以金堆城露天矿为研究对象，重点研究了水平面为椭圆形竖直面为凸形的深凹露天边坡。

Though Coronet was a bustling city, it was filled with parks, plazas and open-air trading stalls, indicative of the Corellian love of wide open spaces.

虽然宝冠城是一个熙熙攘攘的城市，但那里到处都是公园、广场和露天商店，这些说明了科瑞利亚人喜欢开放的空间。

Your eyes cose, I die; your eyes open, I come back alive. Your eyes close and open again and again, I die and come back time after time.

你的眼睛闭上，我的魂就飞；你的眼睛睁开，我的魂又回；你眼睛眨呀眨，我就死去活来千百回。

I would like to say also it is very important that Gaza is open, that crossings are open and the help that the international community is willing to give can arrive to those in need, he said.

我也想说这是非常重要的加沙地带在开放的，开放的通道和帮助，国际社会愿意给能到达有需要的人，他说。

The formula of discharge varying with normal water depth in cubic parabola shape open channel uniform flow and the conditions satisfied by the optimal hydraulic cross-section in the cubic parabola shape channel were deduced according to the theory of open channel uniform flow .

根据明渠均匀流理论，推求了立方抛物线形渠道正常水深与流量关系的计算公式及其水力最优断面所满足的条件。

Listen once again then, Jacques!' said the man with the restless hand and the craving air.'The name of that prisoner was Damiens, and it was all done in open day, in the open streets of this city of Paris

"那就再听着，雅克，"那抓挠个不停的带着渴望神情的人说，那人姓达米安，是大白天在巴黎城的大街上公开处死的。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。