grain testing sieve

例句：

1. 1. This grain testing sieve is designed to accurately measure the moisture content of grains.
   这个谷物检验筛设计用来准确测量谷物的水分含量。
2. 2.The grain screening sieve is used to separate different types of grains from a mixture.
   谷物筛选筛用于将不同种类的谷物从混合物中分离出来。
3. 3.The grain testing sieve is essential for ensuring the quality of grain products before they are sold.
   谷物检验筛对于确保粮食产品在出售前的质量至关重要。