辐射探测器有几种型号，有的是手持设备，有的腕式手表一样，有的像寻呼机一样挂在皮带上。
Radiation detectors come as hand-held devices, wrist watches and pager-size gadgets that hang from the belt.
youdao
这种牌子的电脑有好几种型号。
This make of computer comes in several different models.
至今已经有好几种型号的FCL被推荐使用。
Several types of FCL have been proposed so far.
应用推荐
模块上移
模块下移
不移动