Use a small aperture and position the camera carefully.用小光圈，仔细调整相机位置。Through the aperture he could see daylight.透过缝隙，他能看见日光。For flash photography, set the aperture at f.5.6.用闪光照相，要把光圈孔径定为5.6。...
For flash photography, set the aperture at f.5.6.用闪光照相，要把光圈孔径定为5.6。The optimum aperture of an aerator is smallest at the water depth of 4 m.一般水深在4m左右,曝气器的最优孔径最小.Use a small aperture and position the camera carefully.用小光圈...
I rode a hydrofoil ferry across the bay this morning.今天早上我驾驶快艇驶过海湾.Why can a hydrofoil move on a layer of air?为什么气垫船能靠后方的气流移动?The hydrofoil soon speeded up.那艘水翼船不久就增加速度....
Will you run over to the shop and get some butter?你到铺子里去买点黄油好 吗 ?A dodge behind a tree kept her from being run over.她向树后一闪,才没被车从身上辗过.He narrowly missed being run over by a car.他差点儿被汽车压死....
大多数禾本科胚有一片瓣 状 结构通常称为外胚叶.Most grass embryos have a flap - like structure known as the epiblast.目的: 研究少汗性外胚叶发育不全引起先天缺牙的ED1基因突变.Objective : To detect ED 1 gene mutation in three hypohidrotic ectodermal dysplasia ( HED ) nuc...
Maybe we should take a leaf out of Branson's book. It's easy to see how he became a billionaire...也许我们应该效法布兰森。我们都不难看出他是怎样成为亿万富翁的。Maybe we should take a leaf out of Branson's book. It's easy to see how...
The catalyst intragranular state for methanation system , which is a parallel reaction of equilibrium - restrained, was studied.以甲烷化体系为例, 研究了受平衡约束的平行反应的催化剂粒内状态.Presents the water washing of methanation catalyst used in a...