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 末端质量大于0 . 02公斤( 0 . 04磅)的玩具上的绳在以80转每分钟的速度旋转时长度应小于50厘米( 20英寸)
And only competitive company on manufacture and sale . added in 2 more gravure press machines , with speed of 150m per minite , produced 200 , 000 pieces packing papers daily , sold to 350 different 添增凹版印刷机2台,以150米每分钟的速度日产20万张包装纸,营销全国350家
Each minute of music on a compact disc needs approximately 10m bytes of storage space and takes a bit less than an hour to download via 28 . 8k bit / sec . modem 光盘上每分钟的音乐大约需要10兆字节的存储空间,通过28 . 8k位/秒的调制解调器下载要花一小时不到一点的时间。