The important fators which affect culture conditions of ? Halobacterium halobium ? B were screened by Plackett? Burman design. 利用Plackett-Burman设计筛选出影响盐生盐杆菌( Halobacteriumhalobium )B培养条件的重要因素,然后利用正交试验设计对这些重要因素加以优化.
Some of the older telephones still only accept tokens.一些较老式的电话机仍然只收代币。Coin-operated telephones took 100, 200 and 500 lire coins.投币电话接受100，200和500里拉的硬币。All our rooms have direct dialling telephones.我们所有的房间都有直拨电话。...
一些蝙蝠已经把用于发出回声定位叫声的结构专门化了.Some bats have specialized structures for emitting echolocation calls.“啊, ”叫声的回音.AAAAAAAAAAAAAHHHHHHH, the scream echoed.因此,小波分析是分析蝙蝠回声定位叫声的一种有效的新途径,有其广泛的应用价值.DWT is testified to be a new effecti...
A thin, glistening thread of moisture ran along the rough concrete sill.在粗糙不平的水泥窗台上有一条细细的发光水印。When the soil is dry, more moisture is lost from the plant.土壤干燥时，植物会流失更多的水分。The cells will promptly start to soak up moisture....
Following general observations on timetable and relative emphasis may assist without fettering you freedom of action.以下关于进度和相关侧重点的总的设想可能对你有所帮助,而不致妨碍你的行动自由....
一连串的倒霉事a series of mishaps我把你的文件丢了,纯粹是碰上倒霉事了.I lost your file by pure mischance.组织会议这件倒霉事交给我了.I've been saddled with the job of organizing the conference....