保守
发表于 2025-4-1 04:41:52
Measurement Method of the Reflected from Highways Noise in Urban Buildingscy of the Markov chain method relative to the method based on the Kuttruf integral equation is estimated. It is established that the simplifications made in the Markov chain method have a small effect on the accuracy of determining reflected noise levels. The discrepancies do not exceed ±1.5 dB for
institute
发表于 2025-4-1 09:19:17
Service-Life Evaluation of Reinforced Concrete Sleepers Under Various Working Conditionss. For solving this problem, we have developed a procedure for evaluating the manufacturing quality of ferroconcrete sleepers at the Spetszhelezobeton Plant, BetElTrans JSC, taken as an example as well as the service life of such sleepers in operation at the Trans-Siberian Railway. As a result of th
防水
发表于 2025-4-1 11:22:48
Porosity and Strength of Limestone Treated with Stone-Strengthening Compositione composition Oxal NK100 increases the strength characteristics of the stone and slightly affects its porosity. Conclusions about the effectiveness of the use of stone-strengthening composition are made.
姑姑在炫耀
发表于 2025-4-1 16:49:37
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