3. In the test, the strength grade of concrete is C20 and C60, and the cementitious system contains 10%, 20%, 30% and 40% of fly ash in accord with weight.
4. Based on the results of Bayes estimations, the standard deviations for the compressive strength of RAC with strength grades of C20 and C30 were proposed.
5. Electronic band structure calculations show that sc-C20 is a semiconductor with wide band gap of 4.20 eV, and the gap increase with pressure, similar to that of diamond.
6. He slipped end-over-end machine in the process of casting he slipped end-over-end should pay attention to the seat, cut water ring with the concrete pouring concrete C20.
涵管机在浇注涵管的过程中要注意管座、截水环混凝土采用C20的混凝土浇注。
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7. The sc-C20 is metastable under ambient pressure, and is more stable than graphite at high-pressure (100 GPa), indicating that it can be synthesized through high-pressure.
8. The concrete strength can get the C20 or C30 grade when the structure is reinforced in the non-stop condition, which achieves the expected function and notable economic performance.
在不停产的条件下，对结构进行加固，使混凝土强度达到C20、C30强度等级以上，达到预期的使用功能。
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9. The corrosion resistance of some structural materials, including stainless steel SS304L and carbon steel C20, for the container of the alloy over a long heat storage or release period was studied.
10. An analytical procedure for the determination of C12-C20 saturated aliphatic acids and oleic, linoleic, linolenic acids, major toxic constituents in effluents from pulp and paper mills, is presented.
11. An analytical procedure for the determination of C12-C20 saturated aliphatic acids and oleic, linoleic, linolenic acids, major toxic constituents in effluents from pulp and paper mills, is presented.
