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was changed to 4 m, a major reduction of the accuracy was obtained, in which the F1 score for the case of voxel size 4 m was significantly lower at 91.8% (Figure 14(a)). That is because the selection......
. As the temperature continues to rise, the thermal stress between the particles becomes obvious and the microstructure inside the rock changes accordingly. This results in further reduction......
, ZHANG X L. Structural transformation of manufacturing, natural resource dependence, and carbon emissions reduction: Evidence of a threshold from China [J]. J Clean Prod, 2019, 206: 920-927. DOI......
train passing at a speed of 120 km/h, and compared the impacts of different track vibration-reduction measures based on the test results. However, the vehicle speeds involved in these previous empirical......
the initial damage caused by the addition of rubber particles and the reduction of curing humidity; 3) According to the strain equivalence principle and from the point of view of damage energy dissipation......
reduction of graphene oxide in the polymer solution[J]. Nanoscale Research Letters, 2013, 8: 132. [51] DANG Z M, SHEN Y, NAN C W. Dielectric behavior of three-phase percolative......
1 h immersion. The reduction of diameter of capacitive loops, the appearance of new time constant and the decrease of impedance modulus imply that the structure of PEO coating may be changed......
, CHOI P, RAABE D, KIRCHHEIM R. Nanocrystalline Fe-C alloys produced by ball milling of iron and graphite[J]. Acta Materialia, 2013, 61(9): 3172-3185. [106] LIU F, YANG G. Effects of anisotropic......
DOI:10.19476/j.ysxb.1004.0609.2019.09.16 粉末冶金高熵合金研究进展 刘 咏,曹远奎,吴文倩,宋 旼,张 伟,刘 彬 (中南大学 粉末冶金国家重点实验室,长沙 410083) 摘 要:高熵合金是一类由4,5种或者更多金属元素,以近等原子比例构成的新型金属材料,也称为复杂组元合金.由于其主要组元的非单一性,该类合金具有比传统合金特殊的性能,例如高的强度和韧性,优异的耐腐蚀性能和抗辐照性能等,但在制备方面,材料的组织均匀性以及缺陷控制也存在较大难度.粉末冶金与铸锭冶金相比,在复杂成分合金的元素分布均匀......
; (1) where m is the reduction facture applied to the ultimate tensile......