吡咯, 噻酚和呋喃的情况就是这样.Such is the case in pyrrole, thiophene, and furan.研究结果表明关键步骤为原料 4- 甲基 -2, 3- 呋喃二酮的合成.It'shows that the key step is the synthesis of 4 - methyl - dihydro - furan - 2 , 3 - dione.用糠醇和糠醛缩聚制备了新型呋喃树脂.A n...
Electric Furnace with double deslagging or in the basic oxygen furnace.如双除渣电炉或基本氧炉.Water and electric hook-ups are available and facilities are good.水和电都可以接通，设施也很不错。Electric rays stun their prey with huge electrical disc...
Talk much, cao Wangying also generated strong interest to aquiculture.谈多了, 曹王英对水产养殖也产生了浓厚的爱好.Can do plantation, also can do aquiculture and fowl, cattle to raise.可以搞种植园, 也可以搞水产养殖和家禽 、 家畜饲养.Aquiculture lands: used for aqu...
She had an affected air and a disdainful look.她举止做作，神情倨傲。He is highly disdainful of anything to do with the literary establishment.他对任何与文学界权威沾边的事都嗤之以鼻。Edgar cast a disdainful look at his twin.埃德加朝他的双胞胎兄弟投去鄙夷的目光。...