In there compounds, the cyclopentadiene ring has only four hydrogens.在这些化合物里, 环戊二烯环只有4个氢.The method of cyclopentadiene ( CPD ) from dicyclopentadiene ( DCPD ) with liquid phase thermal decomposition method is studied.研究了...
In there compounds, the cyclopentadiene ring has only four hydrogens.在这些化合物里, 环戊二烯环只有4个氢.The cyclopentadiene is prepared by the thermal cracking of dicyclopentadiene.以热裂解双环戊二烯的方法制备环戊二烯.The chemistry of cyclopentadiene or...
It did not persuade them to abandon the war but it did force them to reappraise their strategy.那并没有说服他们放弃战争，但的确迫使他们重新评估了自己的战略。What should our marketing strategy have achieved?...我们的销售策略应该取得了哪些成果呢？...a remarkably tenaciou...
The metal container began to emit a clicking sound.金属容器开始发出咔嗒咔嗒的声音。It is unlawful for factories to emit black smoke into the air.现在,工厂往空气中排黑烟是违法的.She was heard to emit a cry of horror.人们听到她发出恐怖的叫声....