他们坐在铺有福米加塑料贴面的餐桌前，桌上凌乱地堆着用过的茶杯。They sat at a Formica table cluttered with dirty tea cups.男孩子们把他们用过的脏餐巾留在餐桌上.The boys left their dirty napkins at the table.她发现了两根用过的火柴.She found two spent matches....
Product triphen in GLP is light hydrocarbon aromatization technique in A petrochemical field.液化气芳构化生产三苯工艺,属于石化领域轻烃芳构化技术.The coking and deactivation of virgin naphtha aromatization catalyst are studied on isothermal react...
The hydrogenation can be controlled to produce any degree of hardness desired in the product.为了生产所需要的任何硬度的产品,可对氢作用加以控制.Its hydrogenation activity in aromatics saturation and ring opening activity were investigated.芳烃加氢饱和...