Free wheels for bicycles 自行车飞轮
Free wheels and hub cogs 飞轮及小齿轮
Wheels for hassle-free portability 砂轮无障碍可移植性
She often wheels her red chair and scissors around the city to give free haircuts.
她经常推着红椅子和剪刀在城里转悠,给人免费理发。
What you'll need: a small ball, about the size of a soccer ball; a bath towel; a chair on wheels, like a desk chair; a furniture-free area; some of your favorite dance music; a tall glass of water!
你需要的:一个像足球大小的小球;一条浴巾;一张像办公椅那样的带滚轮的椅子;一块空地;一些你喜欢的舞曲;一大杯水。
Exploration is made of computation correcting method for parameter effects of free recoil on the ballistics when the wheels of recoil trailer are moving in test.
研究了有关自由后坐试验车车轮转动对弹道自由后坐参数影响的修正计算方法,给出了修正计算方法及计算结果。
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