腿部半绕环 DEMI-ROND DE JAMBE
半圈绕组 half-turn coil winding ; half winding
半成型绕组 half-formed winding
半匝绕组 half-turn coil winding
电子控制半自动绕线机 electron control semi-automatic winder
电子半精密卷绕机 electronic semi-precision winder
半圈绕环 DEMI-ROND DE JAMBE
半阻尼绕组 incomplete damping winding
半节距绕组 half-span winding ; half pitch winding
开普勒- 9的这颗小行星绕其恒星公转一周仅需要一天半，它的轨道距恒星仅有250万英里。
The small Kepler-9 planet completes an orbit in just over a day and a half at a distance of 2.5 million miles from the star.
一旦进入轨道，西弥斯太空船将会在只有地月距离的六分之一的高度处绕地球运转，同时，其他两颗在地月距离一半处绕行。
Once in orbit two of the themis spacecraft will circle earth about one-sixth the distance to the moon while the other two circle half way to the moon.
第三定律（周期定律）：各个行星绕太阳公转周期的平方和它们的椭圆轨道的半长轴的立方成正比。
The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.
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