Many carbonate masses older than Middle Palaeozoic are of dolomite rather than calcite.中古生代以前的许多碳酸盐类矿物是白云石而不是方解石.The Chinese proletariat has natural ties with the peasant masses.中国无产阶级和广大农民有天然的联系.Never stand aloof from t...
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 ...