ball ring

常見例句

Assign a shape to each number: 0 looks like a ball or ring;
將每一個(gè)數(shù)字都想象成一個(gè)形狀：0看起來像一個(gè)球或環(huán)；
The anti-wear and friction-reducing properties were evaluated by using four-ball and ring-on-block tribotesters.
以十二烷氧基硼酸鑭為添加劑，采用四球?qū)嶒?yàn)機(jī)和環(huán)-塊摩擦實(shí)驗(yàn)機(jī)評(píng)價(jià)了其抗磨減摩性能。
Pressure on the ball bearing outer ring with a flat seat type, aligning seat type and seat type with a self-aligning washers.
壓力球軸承外圈有平面座型、調(diào)心座型和帶調(diào)心墊圈座型。