共搜索到2100条信息,每页显示10条信息,共210页。用时:0小时0分0秒812毫秒
-treated specimens with different heat treatment temperatures. Each group of specimens was sealed in a vacuum glass tube for heat treatment, and followed by quenching in water to preserve......
was performed on a micromeritics ASAP 2020 volumetric adsorption analyzer. The experiments were carried out at the temperature of liquid nitrogen (77.3 K). The samples were first heated in a tube under vacuum......
are given in Table 3. The bonding strength and the friction coefficient between the anchor and the overlying soil stratum were neglected in free segment because the anchor was covered by a tube that would......
mechanisms of Cr(VI) on MFH@GO were also explored. 2 Experimental designs 2.1 Materials The freeze-dried strain tube of Aspergillus niger (ATCC 16404) was purchased from the General Microorganisms......
[J]. 钢管, 2013, 42(1): 25-28. XIONG Jun-bo, LI Tong-ming, SHENG Yang, YU Bin-jie. Obtainment of zinc-containing rare earth alloy coating of hot-galvanized steel tube[J]. Steel Pipe, 2013, 42(1): 25-28......
Materials A natural CuFeS2 sample was used in the present study. X-ray diffraction (XRD) analysis (Fig. 1) was carried out using a Bruker A8 Advanced diffractometer provided with Cu target tube and Lynx......
h to reduce the segregation. The obtained ingot was induction re-melted in a quartz tube, and subsequently, rapid solidification was carried out by the single-roller melt spinning technique......
alumina slurry. The diffusion multiple was welded at 1000 °C for 4 h in a vacuum furnace (~1×10-3 Pa). Moreover, the welded diffusion multiple was sealed in a vacuum quartz tube and annealed......
of concrete-filled circular steel tube columns under cyclic loads using fiber element method [J]. Thin Wall Struct, 2010, 48(2): 169-178. DOI: 10.1016/j.tws.2007.06.003. [20] CHENG Liang-kui, ZHANG......
tube with two lanes" and the excavation area is about 150 m2. The length ratio of the IV and V classes of rock mass (The rock mass classes are determined according to the BQ system) is about 67.4......