英汉例句双语例句Low and high speed (1000 RPM) windings and resolution to 0.2 arc-sec available.高，低转速（1000 RPM）绕组及可达0.2弧-秒的分辨率。词组短语短语CSS -SEC-ARC 安全英英字典柯林斯英英字典 of a degree of an angle