球: sphere; globe叉: part so as to form a fork; f ...球叉式万向节: weiss type u-joint; weiss universal joint球叉式等速万向节: bendix weiss joint球层厚度: pellet-bed depth球测硬度: ball hardness球差: spherical aberration球测头: ball contact tip球差系数: coefficient of spherical aberration球操: fitball; resist-a-ball球场: 1.(打球的场地) a ground where ball games are played; ball park; diamond2.(排、篮、网、羽毛球场) court3.(足、棒、垒球场) field4.(高尔夫球场) course; links球菜夜蛾、 小地老虎、行军虫: black cut worm