He came upon a valley where rock ptarmigan rose on whirring wings from the ledges and muskegs. Ker - ker - ker was the cry they made.
他走上一个山谷，松鸡在岩石和沼地间呼呼地拍着翅膀穿梭，发出“咯-咯-咯”的叫声。
The kinetic energy release(KER) of the fragments is derived from the time-of-flight spectra. The results are compared with CE model.
从反冲离子飞行时间谱得到氮气分子离子的库仑爆炸释放的动能（KER），并与库仑爆炸模型进行了比较。
Germany Corey (KER) valve is a professional manufacturer of valves, pipe systems, the company was founded in 1968 and headquartered in Germany, Hagen.
德国科瑞(KER)阀门是一家专业从事阀门管道系统的生产厂家，公司成立于1968年，总部位于德国的Hagen。
Germany Corey (KER) valve is a professional manufacturer of valves, pipe systems, the company was founded in 1968 and headquartered in Germany, Hagen.
德国科瑞(KER)阀门是一家专业从事阀门管道系统的生产厂家，公司成立于1968年，总部位于德国的Hagen。
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