Bevel gears: gears which connect two shafts at right angles.伞齿轮: 连接直角相交两轴的齿轮.The bevel milling cutter for cutting groove of oil casing - pipes was designed.设计了用于油气田管道坡口切割的角度铣刀.Precision forging technology is developed ra...
However, the immiscibility of oil with methanol leads to low transesterification rate in the biodiesel production.但在传统的生物柴油生产工艺中, 由于原料油与醇的不互溶性,严重影响了酯交换反应的程度.The three phase immiscibility of Fanshan magma resulted in the ...