Objective To study the catalytic activity of potassium bisulfate in synthesizing hexyl hexanoate.目的研究硫酸氢钾在合成己酸己酯工艺中的催化性能.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合...
Was there a glint of mockery in his eyes?他的眼里是不是闪过一丝讥讽？The debate was a mockery. A big yawn.这场辩论实在可笑。简直是无聊透顶。The present system is a mockery of justice.现存体制是对司法的嘲讽。...
The whole ship shuddered and trembled at the sudden strain.突然的拉力使得整只船剧烈颤动。His voice trembled, on the verge of tears.他声音颤抖，泪水在眼眶里打转。The leaves trembled in the trees.树上的叶子瑟瑟抖动。...
In this article, the author focuses on the anti - feudalism consciousness, tragedy consciousness and animadversion consciousness.本文主要论述了意识倾向变化中的 反 封建意识 、 悲剧意识和批判意识.Her literary criticism focuses on the way great literatu...