1·A ratchet mechanism transfers the thread from spool to bobbin.
一种棘齿装置把线从线轴转到梭心上。
2·Histones make up the spool of proteins around which DNA winds so that it is packaged compactly in the nucleus.
组蛋白组成蛋白线轴，DNA缠绕在它的周围，使DNA紧密地包装在细胞核中。
3·The solidifying streams are gathered into a single strand and wound onto a spool.
这些液流凝固后被集为一股，绕上一个线轴。
4·A penny for a spool of thread, a penny for a needle.
一便士买了线轴，一便士买了针。
5·Depending upon the output of the encoder (150), the speed and rotation of the wire dispensing spool (124) is controlled until the tension in the antenna wire feed line is eliminated.
根据编码器(150)的输出，在天线导线输入线的拉力消除以前，导线分配线轴(124)的速度和旋转被控制。