They are seemingly helpless creatures, apparently easy prey for fish.

The boy was small and frail at first , but he came on quickly.

儿子生来弱小, 不过长得很快.

There was something about that weak voice that sounded familiar.

由他这一句话使我听了这个弱小口音仿佛在哪里听过的.

She was too weak to stand.

她虚弱得站都站不住。

Carrie was still with him, but not helpless and pleading.

嘉莉仍然和他在一起, 但是已经不是懦弱无助哀哀乞怜了.

He is really a wet young man.

他真是个懦弱的年轻人.

The only trouble was that there was a shortage of clerical staff.

只是下级办事员还嫌薄弱.

Your argument is too weak to convince me.

你的论点太薄弱了，说服不了我。

Sending anonymous letters is a cowardly act.

寄匿名信是懦夫的行为.

The brand of a coward is a liability in a military career.

懦夫的污名对戎马生涯是不利的.

Thermocompressed polycrystalline ZnS is a functional ceramic material with excellent transmissivity for long infrared wave.

热压多晶硫化锌属于功能性陶瓷材料,对长波红外有良好的透过率.

Design principle, structure, operation and maintenance of ZNS 3 double wire decker were introduced in this paper.

介绍了ZNS3双网脱水机的设计原理 、 结构 、 操作与维护.

Rise and shine, everybody. Huh? Zak? Marshall?

大家都快起来吧! 呃? 扎克? 马歇尔?

The problems the phase shifted lag bridge armrealizing ZVS is analyzed, and the solution addingnetwork etc.

分析了移相滞后桥臂实现零电压换向的问题, 并提出解决方案.

With the development of-resonant technique-frequency technique, the-bridge phase-shifted PWM ZVS converter is applied in-voltage, high-current converter.

随着高频技术 、 谐振技术的发展,全桥移相软开关电源广泛应用于在低压 、 大电流开关电源领域.

For the active-clamp ZVS-PWM forward converter, the reset of the transformer is the most crucial technique.

在有源箝位 ZVS -PWM正激变换器中, 变压器的磁复位技术是其中最关键的一项技术.

The operating principle of a PS FB ( phase-shifted full-bridge ) ZVS-PWM converter with auxiliary resonant network are introduced.

介绍了一种采用辅助谐振网络的移相全桥 ZVS -PWM变换器,简述其工作原理.

An active clamp ZVS forward converter based on center-tapped rectifier was introduced.

介绍了一种中心 抽头 全波整流有源箝位ZVS正激变换器的工作原理及主要参数计算.

Zirconium powder , Zirconium alloy powder , Zirconium hydride powder ( Zr, ZrNi , ZrH etc. )

锆及锆合金 ( 有:锆粉, 锆合金粉, 氢化锆粉 )

These results suggest that it is safe to use ZPT externally as an antifungal drug.

结果表明ZPT外用是安全的.

The α-chloropyridine-N-oxidining reaction is the key reaction for synthesis of N-oxide-2-mercaptopyridine zinc salt ( ZPT ).

α - 氯代吡啶 -N- 氧化反应是生产吡啶硫酮锌 ( ZPT ) 的关键反应.