The margins of her notebook were festooned with doodles.她的笔记本的空边上胡乱涂写着一些东西.The margins of his notebook were festooned with doodles.他在笔记本的空白处信手画了许许多多条条道道.We start from doodles and sketches.我们从涂鸦和草图开始....
As cement retarder , the effect of desulphurize ashfuel oil ( DADFO ) was studied here.研究了石油焦脱 硫 灰渣用作水泥缓凝剂对水泥性能的影响.As a raw gas for carburizing, it is necessary to desulphurize in the gas sufficiently.所以作为渗碳用原料气必须对天然气充分脱...