On the point of an upright needle he laid horizontally a fine steel bar, which could turn to the right and left like the magnetic needle in a compass-box..
他在一根垂直的针头顶点,设置了一根水平的钢制细棍,它可以左右转动,就像罗盘里的磁针那样。
2
Needle sets we look for are in flat, round plastic boxand contain about 30 needles.
我们所寻购的针要求装在平整的圆形的塑料盒里,并且每一盒要装30支针。
3
Objective To compare the Safety box with the Needle cutter about the advantages and disadvantages in the safe injection area.