When you have a second prototype, conduct a second set of user observations to test the workability of your design changes.
当您出了第二个原型时，重新更换用户来测试新设计方案的可行性。
Mechanism, Mix ratio design, workability evaluation and test method of high-dropping shake-free self-compacting concrete were put forward.
提出对高抛免振捣自密实混凝土的工作机理、配合比设计、工作性评价方法及相应的试验方法。
This article discusses the influences of fine slag powder to workability, compressive strength and durability of concrete in the test.
通过试验讨论了矿渣微粉对混凝土工作性能、抗压强度及耐久性的影响。
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