1) views about chemical substance
化学物质观
1.
Cultivating students views about chemical substance has been one of curriculum aims in Fully Time Compulsory Education Curriculum Standards of Chemistry (experiment draft) that was promulgated in July 2001 by our country department of education.
2001年7月,我国教育部颁布的《全日制义务教育化学课程标准(实验稿)》将培养学生化学物质观列为课程目标之一。
2) chemical
[英]['kemɪkl] [美]['kɛmɪkḷ]
化学物质
1.
Relationship between chemicals in chestnut buds and chestnut gall wasp resistance;
板栗芽内化学物质与抗栗瘿蜂的关系
2.
Effects of Chemicals Spraying Before Flue-curing on Quality of Upper Leaves of Flue-cured Tobacco
烤前喷洒化学物质对上部烟叶品质的影响
3.
Assessment of the environmental fates of chemicals can be facilitated by the application of mathematical models which describe the partitioning, transport and transformation processes of the chemicals in the environment.
这种模型利用了逸度之概念,已被成功地用于描述化学物质在全球、地区及局部环境(包括湖泊、河流、污水处理厂,植物和土壤等)中的行为。
3) chemical substance
化学物质
1.
The relationships among the selectivity of Didesmococcus koreanus Borchs,branch physical structure and chemical substance in the eight host plants and D.
采用笼罩法研究了朝鲜球坚蚧对8种寄主的选择性及其与寄主枝条物理结构、寄主和蚧体内化学物质间的关系。
2.
The larvae of Anua indiscriminata Moore were fed with the leaves of different eucalyptus varieties respectively and the chemical substances in their leaves were assayed in the laboratory.
在室内用不同桉树品种叶片分别饲养同安钮夜蛾(Anua indiscrim inataMoore)幼虫,并测定它们叶片内的化学物质。
3.
In this article, the author clarifies the relationships between plant,plant-eating insect , and its natural enemy from two aspects---the change of chemical substances in plant after its being harmed, and the information elements of insect.
植物、植食性昆虫、天敌三营养系统中相互作用 ,协调进化 ,其中化学物质的变化起着极为关键的作用 。
4) Chemical Substances
化学物质
1.
Relation between the Harmful Chemical Substances in Nicotine of Cigarettes and Health;
卷烟烟气中的有害化学物质及与健康的关系
2.
Research and establishment of inventory of China existing chemical substances database;
中国现有化学物质名录数据库框架研究与构建
3.
The research result solves an urgent problem in the toxicity estimation of chemical substances.
讨论合理定量评估化学物质的诱变性与致癌潜能之间的相关性 ,并就毒理测试评价中的一个亟待解决的问题给出了一种由诱变试验结果来定量评估化学物质致癌概率的新方法——比值评估法 ,运用此法评估化学物质的致癌概率 ,可以有效克服以往 CPBS法评价化学物质致癌性时计算繁杂且难以确定化学物致癌概率的缺陷 ,为合理定量评估化学物的致癌性提供了一种新方
5) chemical cues
化学物质
1.
Induction of metamorphosis of the hard clam Mercenaria mercenaria larvae by chemical cues;
化学物质对硬壳蛤幼虫变态的诱导
2.
Induction of metamorphosis of differentdayold bay scallop Argopecten irradians by chemical cues;
化学物质对不同发育天数海湾扇贝幼虫变态的诱导
6) Chemicals
[英]['kemikəl] [美]['kɛmɪkḷ]
化学物质
1.
Selection of Multimedia Models for Environmental Risk Assessment of Chemicals Based on the Input Data;
基于输入数据的化学物质环境风险评价多介质模型的选用
2.
Differentiation of mesencephalic progenitors induced by different chemicals in vitro;
不同化学物质对新生大鼠中脑神经前体细胞神经元生成的影响
3.
Preliminary Research on Inducing Resistance in Potato Tuber Against Early Blight with 3 Chemicals;
3种化学物质诱导马铃薯块茎抗早疫病的初步研究
补充资料:海洋中化学物质的循环
海洋中化学物质的循环
kinetics of chemical substances in the ocean
海洋资源学824匾随豁眠世醑姆枯啦*薛姆水箭≈富特辫,妒水,爆霹,氓嗣,掣嗣捌科埘螺霉扑晕haiyangzhong huaxue wuzhi de xunhuan海洋中化学物质的循环(kinetics of cllenlical Substanc-es in theoc~)海水长时期地处于与大气圈、生物圈和岩石圈相互作用之中,化学物质(包括可溶性盐类、颗粒物质以及气体)可以通过多种途径进人海洋。反之,海洋中的化学物质也可以有许多渠道被移出海洋。下页图表示元素在通过地慢、地壳、河流、大气、海洋的全球大循环中海洋循环作用的断面图解,图中可以清楚地看到,化学物质通过河流、大气(风力、沉降、降水)、火山喷发、海底热液、海水/沉积物界面的相互作用,以及海水中生物活动等渠道进人海洋。另外,通过重力沉积、化学沉积和生物沉积,会有相当一部分在海水中的化学物质进人沉积相,在大气/海水界面因挥发作用以及海洋表层由于波浪的破碎作用形成气溶胶而使化学物质重新回到大气。 由于海洋在总的化学组分上处于稳定状态,因此,可溶性组分通过不同来源输人海洋的速度与它们输出海洋的速度应基本上处于动态平衡之中,同时,全球沿岸河流输入海洋的可溶性组分是主要的,其数量可达每年4x1)吨。 (余国辉)
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