Environment-friendly thick film conductor paste adopts ultrafine Pd-Ag alloy powder made by chemical methods as functional phase. Alloying is complete. Average grain is 0.1 μ m and specific surface area is 10m2/ g.
环保型厚膜导体浆料,采用化学法制超细钯银合金粉作功能相,合金化完全,平均粒度0.1μm,比表面积10m2/g;
on the validity of boulton and newman's analytic model in the solution of specific yield of coarse-grained unconfined aquifer a new method of determining the specific yield of layered soils in shallow layer under surface
在粗粒无压含水层给水度的求解中解析方法适用性的探讨确定浅部层状土给水度的一种新方法
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