shee box

In the process of constructing the line for longdistance transportation of petroleum and natural gas,the key point is how to find the correct location of bisected tee-connection and how to connect the bisected tee-connection and plywood valve.

主要是解决对开三通位置度及对开三通与夹板阀的连接问题,使对开三通制造达到国家标准。

The design for operation characteristic mold of the centrifugal casting machine is to design the relevant craft course,choose the technics projects and technique requirements.

对开式离心铸造机模具设计是设计出相关的工艺过程,选择、确定工艺方案和技术要求。

The performance of antilock braking system(ABS)-equipped vehicles during cornering braking on bisectional roads is studied.

研究汽车ABS在对开路面上的弯道制动性能,建立汽车ABS弯道制动的四轮车辆动力学模型。

In order to eliminate the head loss caused by valves,a mathematical model has been established for the relationship between the coefficient of minor loss and the relative opening degree of gate valve through ex- periments,and then verified through the comparison of the actual values with calculated values.

为解决给水管网模拟计算中忽略阀门阻力产生的误差,通过实验研究建立了给水管网中常见阀门——闸阀局部阻力系数与相对开度的数学模型,基于阀门“当量长度”概念,提出计入阀门阻力时给水管网的模拟计算方法。

The regulation on the primary flow adjustment intensity of gate valves varying with the relative opening degree is obtained by experiments, and it is shown that the maximum flow adjustment ability of valves depends on themselves structures.

通过实验 ,给出了闸阀固有流量调节强度随相对开度的变化规律 ,并指出阀门的最大调节能力取决于其自身结构。