The resu1ts show that the larger the pore volume and surface area based on loading volume of hydrotreating catalyst, the higher of the catalyst activity based on LHSV.
2
且该空速计具有体积小、重量轻、功耗低、工作可靠等特点。
The airspeed meter has many merits, such as small volume, light weight, low power consumption and high reliability etc.
点击反馈