The price of a security may move up or down, and may become valueless.

Such data are not valueless, however.

然而,这些信息仍具有研究价值.

This is not to say that sport fighting is valueless in teaching self-defence .

这决不是说竞技拳击对 自卫 毫无用处.

The valuer put the value of the stock at $ 25,000.

估价人将存货价值定为25,000美元.

Difficult to make valve tight on both seats due to seat face distortion.

由于阀座面的变形而导致两个阀座难于实现紧密性.

He also has problems with a heart valve.

他的一个心瓣也有毛病。

The Valve analysis represents a typical COSMOSFloWorks internal analysis.

这个阀门分析例子代表典型的COSMOSFloWorks的内部的分析.

heart valves

心脏瓣膜

A large, valved, brass wind instrument with a bass pitch.

大型带活塞的低音铜管乐器.

The newest research direction about pulse tube refrigerator is multi-stage cryocooler driven by valveless compressor.

介绍了国外最新开展的关于脉冲管制冷机的研究方向:无阀压缩机驱动的 多级 脉冲管制冷机.

The two types of engine valves are intake and exhaust.

发动机气门的二种型式是:进气口和排气口.

Transistors have many advantages over the old-fashioned vacuumtube valves.

与老式真空管相比,晶体管具有许多优点.

Cars began using caps that incorporated two valves.

汽车开始使用装有两个阀门的油箱盖.

The circular movement of this crank operates the valves register.

曲柄的圆周运动带动了阀门的记录器.

Valve clatter is of course eliminated along with the valves.

阀门的咕噔咕噔的声音自然也与阀门一起被消除掉了.

Disk valves are commonly used when solids are in the aerated state.

蝶阀通常用在固体处于充气状态的地方.

The position of the valves during the power stroke are both closed.

在作功冲程期间,气门的位置都是关闭的.

A new nonlinear variable structure excitation controller and steam valving controller are proposed in this paper.

论文提出一种新的非线性变结构发电机励磁和快关汽门控制器.

Objective: to observe the clinical effect of Qiangxinboyuan decoction on rheumatic valvular disease cardiac failure.

目的: 观察强心保元汤治疗风湿性心瓣膜病心力衰竭临床疗效.

Conclusion The mortality of cardiac valvular surgery in the elderly is acceptable.

结论老年人瓣膜病手术总体手术病死率可以接受,近2年手术病死率已接近5%.

Objective To investigate the post operation nursing characteristic of cardiac valvular disease after surgical treatment.

目的探讨心脏瓣膜病变外科治疗的术后护理措施.