cord length造句

例句與造句

1. Toys with an end mass greater than 0 . 02 kg ( 0 . 04 lb ) shall have cord length less than 50 cm ( 20 in . ) measured when rotating at 80 r / min
   末端質量大于0 . 02公斤( 0 . 04磅)的玩具上的繩在以80轉每分鐘的速度旋轉時長度應小于50厘米( 20英寸)
2. It's difficult to find cord length in a sentence. 用cord length造句挺難的