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Researchers recently observed the existence of a critical value of loading rates. They found mechanical behavior of the coal varies substantially with the loading rates on different sides of the critical value.
This article proposes hypothetical solutions for constructing modular piling in Arctic nearshore conditions considering the distribution of loads during operation in seasonally flooded areas. The research is taken from Litvinenko, V. S et al's paper published in the International Journal of Mining S
Coal is currently the key energy source in China, and this condition will not change for the foreseeable future. A majority of the coal mines are underground, involving more mining risks than open-pit mining methods. This article is based on Cheng, P. et al's journal paper published in Shock and Vib
攻克“卡脖子”技术有底气新材料产业需要舍得投入、看得长远、坐得了冷板凳记者在采访中发现，市场增长迅猛的新材料，背后都有一个共同特点，即集中力量攻克关键核心技术“卡脖子”问题。一颗颗不起眼的黑色氮化硅陶瓷轴承球，能耐得住每分钟60万次的摩擦以及上千摄氏度高温的炙烤……这些“身材”小却作用大、叫得响的新材料，正是今年以来市场销售快速增长的中高端产品。继美国阔斯泰、日本东芝之后，公司成了全球第三家，也是国...
攻克“卡脖子” 技术有底气 新材料产业需要舍得投入、看得长远、坐得了冷板凳 记者在采访中发现，市场增长迅猛的新材料，背后都有一个共同特点，即集中力量攻克关键核心技术“卡脖子”问题