HG/T 2843-1997
Chemical fertilizer products. Standard volumetric, standard, reagent and indicator solutions for chemical analysis 化肥产品 化学分析常用标准滴定溶液、标准溶液、试剂溶液和指示剂溶液 |
HG/T 21611.1-1996
Collective general drawings of reinforced concrete trestles of belt conveyers 钢筋混凝土带式输送机栈桥通用图.(非预应力梁板构件图) |
HG 21592-1995
(Glass level gauge standard series and technical requirements (PN1. 6)) 玻璃管液面计标准系列及技术要求(PN1.6) |
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