查询词典 ping-pong ball

I was but days out of Tristram when I saw a screaming ball of flame rip across the sky.

直到有一天，我看到一团呼啸的火焰，划破崔斯特瑞姆的长空。

As the complete characteristic curves of reversible pump turbine are often used to calculate the instantaneous parameters, this paper studies the characteristic curve and the wicket closure and opening law in pumped storage plants.Chapter 1 presents the importance and the necessity of this study and reviews the previous related research on hydraulic transient process and valve regulation in pumped storage plants.Chapter 2 analyzes the six collected characteristic curves of reversible pumped turbine and studies their diversification from the point of view of specific speed. The six collected discharge and moment curves with maximum efficiency have been fitted to piecewise continuous curves. This curve-fitting procedure is listed.Chapter 3 takes Liyang Pumped storage plant as an example and analyzes the effect of different characteristic curves on regulation guarantee parameters and the variety of its trochoid during the same operation status.Chapter 4 takes three pumped storage plants with different heads as examples and studies the characteristic of coordinated closure with wicket gate and ball valve and its effect on dynamic pressure in the spiral case, inlet pressure in the draft tube and the rise of rotating speed.Chapter 5 summarizes this paper and point out what should be done in the future research.

由于在过渡过程分析计算中，需要频繁利用可逆式机组的全特性曲线推求机组的瞬时参数，所以本文就特性曲线及关闭规律问题进行了研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水力过渡过程、抽水蓄能电站及阀调节的研究成果，在此基础上提出本文的研究内容；第2章，针对收集到的六套特性曲线，从比转速的角度出发来研究可逆式机组特性曲线的变化规律；并对六套曲线的最高效率流量和力矩曲线进行分段拟合，得到各分段函数的具体形式，再通过举例说明最高效率曲线的拟合步骤；第3章，以溧阳抽水蓄能电站为实例，分析讨论不同比转速特性曲线对调保参数造成的影响及对于相同工况其轨迹线的变化；第4章，结合高、中、低三水头段抽水蓄能电站，在导叶直线关闭的基础上，研究导叶与球阀协联关闭规律的特点及对蜗壳动水压力、尾水管进口压力及转速上升造成的影响；第5章，总结全文，提出今后研究的重点和方向。

Engineering, Procurement, Construction Management for SAG Mill with trommel including all auxiliaries like mill relining machine, bolt removal system, variable frequency drive, on line charge measuring system, automatic ball charging system etc.

对SAG磨机及滚筒筛的工程、采购与施工管理，其中包括所有辅件如磨机制动带机、螺栓拆除装置、变频机、在线装料检测系统与自动磨球装料系统等

Generally considered below the ball of light generated by the troposphere fluctuations.

一般认为与光球下面的对流层所产生的波动有关。

Then when he's really tired, he'll leave the ball and just trot back all alone.

然后，当他真的累了，他将离开球和公正小跑回到孤零零。

Harry was enjoying a trundle around the garden in his hamster ball, but now the evil cat h..

哈里是在享受他的仓鼠球周围花园特兰德尔，但现在每小时邪恶的猫。

Harry was enjoying a trundle around the garden in his hamster ball, but now the evil cat has him trapped and is getting his nasty servants to attack!

哈里是在享受他的仓鼠球周围花园特兰德尔，但现在他的邪恶猫被困越来越讨厌的公务员来攻击！

Heavy Duty Trunnion- The ball trunnions are designed for demanding applications requiring long service life, with a reduction in maintenance time and costs.

重型耳轴，球耳轴是苛刻的要求，使用寿命长的应用而设计，以期在维护时间和成本的降低。

A large trunnion or trunnion support design ensures central positioning under the highest working pressure. The trunnion mounted ball permits ease of operation.

三片式阀体设计大枢轴或枢轴板设计确保在高压下正确的中心位置，固定球结构保证阀门良好的操作性能。

When the hand wheel rotation, driving the plunger in the hole through the stem up and down reciprocating motion of the middle frame to complete the valve opening and Two Piece Trunnion Ball Valve closing function.

当手轮旋转，通过阀杆带动柱塞在孔架中间上下往复运动来完成阀门的开启与关闭功能。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。