实物标准 meaning in English

material standard

In the modern electricity metrology standards , standard capacitor is considered as the best phsical standard which can be used to reappearance of the capacitance unit ? farad
现代电学计量标准中,标准电容器被认为是复现电容量值单位?法拉最好的实物标准。
In the meantime , while conducting the purchase , all the sub - groups of preliminary products of the longrun tea group have clarified standard for purchasing and inspecting and accepting , so that each tea leaf is ensured the top quality
同时，在进行原料收购时，龙润茶业集团的所有初制所均有明确的收购标准及验收实物标准，以保证每一片茶青的优秀品质。