小阀

Secondly, the single domain model of spin-valve is investigated. The calculation results of the spin-valve magnetic behaviour using single domain model by energy minimizing method consist with the experimental results.

其次，系统地研究了自旋阀的单畴模型，运用能量极小的方法计算得到了自旋阀的磁场响应曲线，与实验结果吻合。

Pipe-type check valve is emerging as a valve, its small size, light weight, good processing technology is the development of non-return valve.

管道式止回阀是新出现的一种阀门，它的体积小，重量较轻，加工工艺性好，是止回阀发展方向之一。

In the steam pipe jacket trap, set a competent Road, close to the radius of the condensate pipeline in the water collecting well, and then use the small tubes lead to the trap.

在蒸汽管道上装疏水阀，主管道要设一个接近主管道半径的凝结水集水井，然后再用小管引至疏水阀。

The steam pipe jacket trap, set a competent Road, close to the radius of the condensate pipeline in the water collecting well, and then use a small tube lead to the trap.

在蒸汽管道上装疏水阀， ISO国际标准阀门主管道要设一个接近主管道半径的凝结水集水井，然后再用小管引至疏水阀。

The steam pipe jacket trap, set a competent Road, close to the radius of the condensate pipeline in the water collecting well, and then use the small tubes lead to the trap.

在蒸汽管道上装疏水阀，锻钢阀门主管道要设一个接近主管道半径的凝结水集水井，然后再用小管引至疏水阀。

Washing, cutting ring and eyes require board (disc valve pump valve is the plate with the tie bar and wear-resistant film from top to bottom) the gap is smaller, there is a large amount of water to be strictly sealed, so to clean the ball forward after the infiltration of water .

水洗，要求切割环和眼睛板(碟阀泵则是板阀与系杆和上下耐磨片)的间隙要小，需有大量的水，严格密封，做到清洗球后的水不向前渗透。

Electric control valve common problems and solutions: 1 Why a small two-seater valve opening is easy oscillation work?

电动调节阀常见问题及解决办法： 1、为什么双座阀小开度工作时容易振荡？

The replacement of valves and good stability and good stability of its unbalanced force changes in the smaller valve, a good guide.

3更换稳定性好的阀稳定性好的阀其不平衡力变化较小，导向好。

Based on analysis of the current state of the flow pattern modeling abroad and at home, explains the meaning of the mathematical simulation of the flows in the valve.(2) Comparing flow simulation data of jet pump with its experimental one, the feasibility and reliability of FLUENT used for flow simulation are proved.(3) Based on the characteristic of valves, the fluid field analysis of specific ring-spray type flow-adjustable is finished. The valve structure is optimized to meet the need, which makes it have such advantages:(1)smaller vortex area and faintish vortex intensity, so the vibration of vortex is controlled effectively;(2)the pressure is distributed more equality, the transition area is larger.

论文的主要内容包括：(1)简述了阀门研究的现状与发展，在分析与总结国内外流体流动模拟研究的基础上，探讨开展阀门内水流运动数值模拟的意义；(2)对特定型号的射流泵进行了内部流场的数值模拟研究，并与实验数据相比较，验证了应用Fluent进行数值模拟的可行性和可靠性；(3)针对调流阀的特点，对特大口径环喷式流量调节阀进行流场计算，其设计指导思想如下： 1、控制旋涡，减小旋涡区，减小涡的强度； 2、控制压力分布，使阀体受力更均匀，改善局部应力状态，提高阀门使用的安全性； 3、最小绝对压力高于水的汽化压力，不产生汽蚀。

A method for cold transportation of goods that are placed in a hollow-walled refrigerating container, comprising the following steps: storage of a pumpable solution of tiny ice crystals, known as binary ice, having a given composition and temperature, in a binary ice store until said binary ice is used for refrigerating or filling purposes; the optionally filled wall of the refrigerating container that is to be used is emptied via an outlet valve for the binary ice; binary ice is allowed to circulate inside the refrigerating container via filling instruments that are supplied with binary ice from the binary ice store until the temperature of the wall drops to a given temperature, whereby the heated fluid that is discharged from the outlet valve is fed to a binary ice fluid store; the wall of the refrigerating container is filled with a given amount of binary ice; the refrigerating container is decoupled from the filling instruments; the binary fluid that result from the melted binary ice is returned to a corresponding binary fluid store in order to produce new binary ice from said binary fluid.

一种置于一中空壁制冷容器里的制品的冷运输用的方法包括下列诸步骤：将一种具有一预定的组成和温度的可被泵送的小的冰晶体的溶液保存在一个二元冰储槽中，直到所述的二元冰用于制冷或充填目的；通过一二元冰出口阀将待被使用的一制冷容器的随意被充填的壁排空；用二元冰充入该制冷容器的被排空的壁内；通过充填器具使该二元冰在该制冷容器里循环，这循环由来自二元冰储槽的二元冰供给，直到壁温下降到一预定值，从而从该出口阀放出的被加热的流体被提供给一个二元冰流体储槽；将一给定量的二元冰充入该制冷容器的壁里；从诸充填器具上拆离该制冷容器；将从溶化的二元冰形成的二元流体返回到一相应的二元流体储槽内，以便从所述的二元流体制取新的二元冰。

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。