Methods Dip way for mosquito and topicd application for housefly.方法分别用浸渍法和点滴法测定淡色库蚊和家蝇的抗药性.Photoperiod produces little influence on the diapause of housefly larvae.光周期对家蝇幼虫滞育的影响不大.Objective : To study the effect of house...
玛蒂尔达在一块有花鸟图案的祭坛布上刺绣。Matilda was embroidering an altar cloth covered with flowers and birds.长木椅 、 布道坛和祭坛都与教堂朴素高雅的气氛一致.The pews, the pulpit and the altar are of a piece with the simple elegance of the church itself.他在祭坛前跪拜...
The prospectors have discovered such minerals as calcite, quartz and asbestos here.探矿人员在这里发现了方解石 、 石英、石棉等矿藏.There is a great deal quartz in those mountains.那些山里蕴藏着大量石英.To this class of substance belong mica, porcelain, q...