topsoils
英
美
(topsoil 的复数) n. 上层土, 表层土
topsoil 的复数
双语例句
- Regional distribution and pollution evaluation of heavy metal pollution in topsoils of the Chengdu Plain
成都平原土壤重金属区域分布特征及其污染评价 - Distribution and Retention of Heavy Metals in Floodplain Topsoils of Le'an River
乐安江河滩表层土中重金属的分布和残留分析 - Sample Investigation of Nickle ( Ni) Content in Main Topsoils of Henan Province
河南省主要土类土壤耕层镍（Ni）含量调查 - Distribution and origin of Cd, Pb and Zn in topsoils of plain region of Chengdu Basin
成都盆地平原区浅层土壤Cd、Pb、Zn分布特征及其成因初探 - Assessments of agricultural eco-environmental quality of topsoils in Fuzhou City
福州市表层土壤农业生态环境质量评价 - As calculated according to the quadratic regression equation, the average amounts of copper and zinc were 0.747 ppm and 0.122 ppm in each gram organic matter per 100g topsoils ( 0& 20cm) respectively.
用二元回归的方法，百克表土（0-20cm）中每克有机质含有效铜平均为0.747Ppm、含有效锌平均为0.122ppm； - Relation between Sulfur and Magnetic Parameters in Xuzhou Urban Topsoils and its Environmental Significance
徐州城市表层土壤中硫与磁学参数的关系及其环境意义 - A preliminary study on the features of phosphate adsorption isotherm for some topsoils in Laiyang
莱阳几种土壤磷等温吸附特性初步研究 - Microflora in Urban Topsoils in Shenyang
沈阳市城市表土中微生物区系变化的初步研究 - Finally, problems relating to an intensive study of the artificial environmental concentration coefficients of elements in topsoils are discussed and some helpful suggestions are put forward.
最后探讨了深入开展土壤中元素环境富集系数研究的相关问题，并提出了建议。 - Contamination of urban topsoils with metals is an issue all urban regions have to deal with.
城市表层土壤中金属元素的污染必须加以控制。 - The enrichments of Cd, Pb and Zn occur mainly in the urban area and agricultural topsoils in the plain region, which agrees with the high value area in the geochemistry maps in topsoils of Chengdu Basin.
Cd、Pb、Zn元素的富集主要出现在平原区中部的城镇及农田区，与成都盆地浅层样地球化学图上的高值区一致。 - Preliminary study indicates that the formation of local Se-rich topsoils is related to some particular geological setting and that the soil environment producing natural Se-rich tea is relatively advantageous.
初步研究表明当地富硒土壤的形成与特定地质背景有关，生产天然富硒茶叶的土壤环境相对优越。