您要查找的是不是：
- They increased ventilation by opening the top center part of the carriage window. 他们把车厢上面的中央部分打开以增进空气的流通。
- Used in or obtained by extraction. 提取的用于提取的，或通过提取得到的
- Maintain adequate air ventilation by opening windows. 窗户应经常打开,保持室内通风良好。
- ventilation by extraction 抽气通风
- The study on refining mineral gold by extraction process was made. 主要研究了用萃取法进行矿产金的精炼。
- Maintain good indoor ventilation by opening windows from time to time. 经常打开窗户,保持室内空气流通。
- Something obtained by extracting;an extract. 精选，摘录通过摘录而得到的东西；摘录
- Something obtained by extracting; an extract. 精选，摘录通过摘录而得到的东西；摘录
- Sediment in Crude and Fuel Oils by Extraction, Method of Test for (05. 萃取原油和燃料油中沉淀物的试验方法(05。
- Ensure that you have adequate ventilation by opening windows and operating exhaust fans. 打开窗户并开启抽气扇,确保室内空气流通。
- The calcium lactate by extraction could reach pharmacopoeia standard. 萃取后乳酸钙中铁盐含量达到药典标准。
- They increased ventilation by opening the top centerpart of the carriage window. 他们把车厢上面的中央部分打开以增进空气的流通。
- The bathroom is ventilated by means of an extractor fan. 这个浴室使用抽风扇通风。
- Piperine was obtained by extraction of piperlongunl with ethonal for several times. 蒙药药材荜茇经过多次用乙醇提取 ,进一步分离提纯得到较纯的胡椒碱 ;
- In this paper, the garlic oil was prepared by extraction with aether as solvent. 采用乙醚萃取法提取了大蒜油,并研究了大蒜油对木霉和根霉的抑菌作用。
- To study on processing technology of recover Tridecane Dicarboxylic Acid from mother liquor by extraction. 采用溶媒萃取方法,对十三碳二元酸滤液进行回收工艺研究。
- The sample was etherified in 10% H2SO4-CH3OH, followed by extraction with CH2Cl2, and determined by GC. 采用10%25的硫酸甲醇对样品进行衍生化,用二氯甲烷萃取,最后进行气相色谱分析。
- Methods After treatment of amino acids with 2,4 dinitrofluorobenzene(DNFB) excessive DNFB was removed by extraction with tert bultyl methyl ether. 方法 氨基酸与2 ,4 二硝基氟苯衍生化反应完成后 ,用 10ml叔丁基甲醚抽提 2次 ,每次 5ml,以除去多余衍生化试剂。
- OBJECTIVE To study skin penetration enhancing effect for paracetamol by extract of Jixingzi in alcohol. 目的:研究中药急性子乙醇提取液对对乙酰氨基酚作为试验药物的促透皮作用。
- The virus was further identified as Cherry rasp leaf nepovirus by extraction,electron microscopy and spectrophotometer detection of the virus. 通过病毒的提纯、电镜观察和紫外分光光度计的检测,进一步确定该病毒为樱桃锉叶病毒。
