In this paper,ultrasound assisted extraction and high performance liquid chromatography analysis was developed to measure PCP residual in Qingzi soil.
研究了超声萃取结合高效液相色谱技术在青紫泥五氯酚残留分析测定中的应用,包括不同提取剂(乙腈、二氯甲烷)和反应体系酸度及提取时间、温度对微波提取效率的影响。
The Mountain of Green Clay is formed of many circles-Each hundred steps, we have to turn nine turns among its mound --Panting, we brush Orion and pass the Well Star,
青泥何盘盘， 百步九折萦岩峦，
Frogs go deep under the mud.
青蛙钻到深深的泥土中。
I'll have eggplants,mashed potatoes and green beans.
我要茄子、土豆泥和青豆。
I'll have mashed potatoes and green beans.
我要土豆泥和青豆。
Disease Investigation and Analysis on Cement Pavement and Asphalt Pavement of Qing-Kang Highway
青康公路水泥路面和沥青路面病害调查与分析
The floatingheart growing in the sludge Sways leisurely under the water;
软泥上的青荇,油油的在水底招摇;
grooving machine for asphalt, cement or concrete
沥青、水泥或混凝土切缝机
So they had bricks for stone and asphalt for mortar.
于是他们用砖代替石头，沥青代替灰泥。
They fished up a bronze cup from the mud
他们从污泥里摸出一只青铜杯。
checkering machine, for asphalt, cement or concrete
沥青、水泥或混凝土刻花机
Research on Asphalt Overlay Technology of Existing Cement Concrete Pavement;
旧水泥混凝土路面沥青加铺技术研究
Study On The Rebuilding Of Asphalt Overlay On Old Cement-concrete Pavement
旧水泥混凝土路面沥青罩面改造研究
On addition of asphalt concrete pavement on cement road surface
浅谈水泥路面上加铺沥青混凝土面层
Micro Structure Characters of Cement Emulsified Asphalt Mortar(CAM)
水泥乳化沥青砂浆(CAM)的微观结构特征
The research of the cooling technologies of cement concrete in Qingdao Gulf Bridge
青岛海湾大桥水泥混凝土降温的研究
Performance Research of Emulsified Bitumen Cement-Stabilized Crushed-Stone Pavement
乳化沥青水泥稳定碎石路用性能研究
The mechanism analysis of cement-asphalt covering composite material intensity
水泥—沥青面层复合材料强度机理分析
Microstructure characters of cement emulsified asphalt composite mastics
水泥乳化沥青复合胶浆微观结构特征