After testing the national standard substance (GBW 07416) of soil available composition, the analytical results are nearly in accord with standard values.
通过对国家标准物质土壤有效态的测试，结果与标准值基本一致，测得值都在标准值的不确定度范围内。
2
GBW seal, which will expand when water go in, is a new type of seal material. It can effectively resolve the sealing problems of settlement joints of concrete structures.
GBW遇水膨胀止水条是一种新型腻子型柔性嵌缝止水材料，可有效地解决混凝土结构的接缝止水问题。
3
The method has been applied to the determination of rare and rare earth elements in standard reference shale sample (GBW 07107)and standard reference stream sediments(GBW 07305 and GBW 07310).