已知活性炭对很多反应是一种极好的催化剂.Activated charcoal is known to be an excellent catalyst for many reactions.蒸气回收罐中充满了活性炭.The canister is filled with activated charcoal.活性炭罐蒸气排泄阀是由真空控制的.The canister vapor - vent value is operated by v...
请记住，幸福不在于你是谁或者你拥有什么，而仅仅取决于你的心态！Remember, happiness doesn't depend upon who you are or what you have; it depends solely upon what you think.--Dale Carnegie“我想发份电报。”——“好的，发给谁？”"I want to send a telegram." — "Fine, to ...
Their price depended almost entirely on their scarcity.它们的价格几乎完全取决于它们的稀有程度。a time of scarcity物资短缺时期The scarcity of fruit was caused by the drought.水果供不应求是由于干旱造成的....
The wind dislodged one or two tiles from the roof.大风从屋顶上刮下了一两片瓦来。Erodible soil fractions are usually dislodged from projections and trapped in depression.可冲蚀土壤部分经常从凸出物剥蚀并降落于洼地.In the exertion Tompkins' hat had becom...