reterence
证明人
介绍人
证明书
例句
The fluoride in standard reterence material of broccoli, spinach, rice, dry fish meat and the corn of was determined by this method on precision and accuracy.
用本法对菜花、菠菜、大米、鱼片干四种样品以及玉米氟样品的氟进行了精密度和准确度试验。