“取样器”的英语？

最初的河床质取样器有三种类型.Bed material samplers, as first developed , may be divided into three types.把深水取样器固定在直升机的试验台上.A depth sampler is strapped to the running board of the helicopter.吊篮和平盘式取样器加大了对水流的阻力.The basket and pan types ...