نتایج جستجو برای: varkesh and beheshtabad sub
تعداد نتایج: 16863858 فیلتر نتایج به سال:
Abstract The two compounds Fe 2 B 3 O 7 ( a = 663.61(4), c 438.39(3) pm, space group: P 4 ‾ $\overline{4}$ 1 m ) and Mn 4 (B 6 13 (OH)) 445.14(1), b 683.56(2), 1330.34(3) β 90.42(1)°, / were synthesized under high-pressure/high-tempera...
The selection of optimum support system is a key step in the successful design operation of tunneling, rock mass stabilization and minimization of plastic zone extension around a tunnel. In this context, it is not sufficient to rely only on the experiences of design engineers, but taking all effective measures and parameters is necessary to do a proper choice. In this paper, multi attribute dec...
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