“seconds pendulum”的概念、定义、翻译、参考文献-科学参考

单词	seconds pendulum
释义	seconds pendulum [`sek·ǝns ´pen·jǝ·lǝm] ^HOROLOGY A pendulum measuring 99.353 centimeters between its center of suspension and center of oscillation, and which requires exactly 1 second to swing from one side to another at sea level and 45° latitude.
随便看	ring holes ringing ringing circuit ringing time ring isomerism ring isomorphism ringite ring jewel ring job ring laser ring lifter ring-lifter case ringlock nail ring micrometer ring modulator Ring Nebula ring network ring of operators ring-oil ring plain ring power transmission line ring road ring-roller mill ring-rolling ring rot

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