A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.用糠醇和糠醛缩聚制备了新型呋喃树脂.Resinification of furfural on the catalyst was the main cause of deactivation.糠醛树脂化结焦是导致催化剂失活的主要原因.Fig. 5 Varia...
Fig. 5 Variation of furfural calibration curves in aniline acetate colorimetric method.图5醋酸苯胺比色法,糠醛标准校正线之变化.A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.用糠醇和糠醛缩聚制备了新型呋喃树脂.The...
The towering pine and cypress trees defy frost and snow.松柏参天傲霜雪.The pine and the cypress remain green all the year round.苍松翠柏,常绿不凋.The rays of the late sun slanted in streams through the cypress trees.夕阳的光线一缕缕地从柏树林中斜穿过来....
我们将在中途停下,在一家饭馆吃饭.We'll stop off at a restaurant for dinner.这种狂妄的幻想使他在中途岛战役中一无作为.This delusory vision kept him out of action at Midway.我在中途可以停 吗 ?Can I stop over on the way?...
The ulcer had been troubling her for several years.溃疡已经折磨她好几年了。"It's my ulcer," he added by way of explanation.“那是因为我得了溃疡，”他补充解释说。A bacterium is identified as the cause for his duodenal ulcer.一种细菌被断定为造成他十二指肠溃疡的根源....
"So what do you think will happen?" he asked eagerly.“那么你觉得会发生什么？”他急切地问道。Lulled into a false sense of security, we eagerly awaited their return.我们被一种虚假的安全感所麻痹，急切地等着他们回来。Myself when young did eagerly frequent Doctor and S...
Husband and wife are now taxed separately on their incomes.现在夫妻双方分别按各自的收入纳税。She was certainly not the type to murder her husband.她绝不是那种会谋杀亲夫的人。She went to pray for the soul of her late husband.她去为亡夫的灵魂祈祷。...
They have lifted water from the Yellow River onto the high land and reaped a good cotton harvest on a 300 - acre tract.他们把黄河水引上高原,使300公亩棉田获得丰收.The harvest must be reaped in good time.农作物必须及早收割.When the wheat is headed it...