担忧的

The digital control of ultra-audio-frequency serial resonant induction heating power supply is mainly researched in this paper.

本论文的研究内容主要是串联谐振式超音频感应加热电源的数字化控制技术。

And round the corner came the huntsman and whipper-in, Danilo, a grey, wrinkled man, with his hair cropped round in the Ukrainian fashion. He held a bent whip in his hand, and his face had that expression of independence and scorn for everything in the world, which is only to be seen in huntsmen.

猎犬训练管理人和狩猎长丹尼洛从墙角走出来了，他头发苍白，满面皱纹，剪了个乌克兰式的童化头，手里执着一根短柄长鞭，流露出一副唯独猎人才有的独立活动和蔑视尘世中一切的表情。