proof sample

• 试样

proof sample的用法和样例：

例句

1. The sample enters the boiler unit.
   试样进入蒸发器。
2. Can adapt to a variety of materials, sample preparation.
   可适应各种材料的试样制备。
3. What I need is nothing but a sample.
   我需要的不过是一件样品而已。
4. The invoice charges us for the sample.
   发货单上列出了样品费。