echo sampler

• 回波采样器

echo sampler的用法和样例：

例句

1. Soil is sampled with a core sampler.
   土壤的采样使用芯形采样器。
2. A device made of plexiglass is added between the gas absorption tube and gas flowmeter in the atmospheric sampler.
   在大气采样器上加装防止倒吸装置，可防止吸收液倒吸进入流量计。
3. A depth sampler is strapped to the running board of the helicopter.
   把深水取样器固定在直升机的试验台上。