比如：HRBF335是强度等级为335MPa的细晶粒热轧带肋钢筋,H是热轧，R是带肋，B是钢筋，F就是那个细晶粒的意思，就是里面有这个成分。
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Owing to the accuracy and efficiency of the analysis, the finite element sizes were limited to 10–15 mm for the solid elements (Figure 5) and 20 mm for the truss element, based on the FEA results [18]. In particular, the overall mesh size was automatically granted within the limited ...
after the addition of four different sizes of AgNPs. With the reduction in AgNPs size (2–60 nm), the breaking strength and breaking strain of hybrid fibers tended to increase. The results showed that the hybrid fibers containing 2 nm AgNPs were remarkable, with excellent mechanical properties ...
In brief, fine powder was obtained from palm tree trunk mesh and pretreated with supercritical carbon dioxide (ScCO2) to eliminate the water-soluble extractives. It was then treated with a 20% (w/v) sodium hydroxide solution at 90 °C for 6 h. The solid fraction was separated and washed...
Nanofiller sample preparation for TEM: The powdery nanofillers were dispersed in ethanol and deposed as a drop onto a TEM grid (400 mesh) consisting of a copper grid covered with a thin, electron-transparent carbon film. The drop containing nanofiller was dried at room temperature before TEM ...
7788 7788 F-value 522.80 579.54 F-value 499.37 575.21 Adj R-squared 0.363 0.388 Adj R-squared 0.366 0.384 Notes: (1) The dependent variable is log (Robotization indicator); (2) Reference group at company sizes is 1–4 employees; (3) Standard errors in parentheses *** p < 0.01, ** ...