1) biological precursor
母质来源
2) The original source of soil
土壤母质来源
1.
The original source of soil,the physiognomy characters of farm land,the forming soil model and 4 main features of soil were analyzed systematically from some aspects,such as the geographical background,the physiognomy characters,the characters of coming into soil,and the inflow characters in space distributing area from the rock efflorescence to becoming soil.
从岩石风化至成壤过程在空间上分布区域的地质背景、地貌特征、成土成壤特征以及成土成壤物质的流入特点等方面,系统地进行了土壤母质来源、农用地地貌特征、成土成壤单元类型、"土壤四大特性"等分析,指出封闭型、类封闭型成土成壤单元是名特产品产出的空间条件;研究区内农用地的土壤母质来源地层单一,且未经过远距离搬运,保持了岩层岩石成土矿物的特性,是形成名特农产品麦萝品质的特色之本。
3) maternity
[英][mə'tɜ:nəti] [美][mə'tɝnətɪ]
母系来源
1.
Queen mating frequency and maternity of drones in honeybee colonies detected with VNTR molecular markers;
利用VNTR分子标记鉴定蜜蜂群内蜂王交配次数和雄蜂母系来源
4) matter source
物质来源
1.
It has believed that the major matter sources for Au element are ultrabasic rockbodies.
文章应用XRD分析、扫描电镜、回归分析、线性相关分析等方法,发现了Au与Pt、Pb共生,并呈正消长关系;Au、Ag、Se的赋存关系十分密切,认为金的主要物质来源是超基性岩体。
5) source
[英][sɔ:s] [美][sɔrs]
物质来源
1.
The results showed that the source of REEs from sea was few,and the source from land plants was about 1%.
研究发现:海洋来源对稀土元素的富集作用极其微弱;来自植物成因的物质来源小于1%;稀土元素的物质来源主要受陆源影响和控制。
2.
The concentration,speciation and distribution of rare earth elements (REEs) in the suspended particulate matter (SPM) of Lake Chaohu were studied by inductively coupled plasma mass spectrometry(ICP-MS) after sequential extraction in order to investigate the source of matters in the aquatic environment.
巢湖东西湖区悬浮物残渣态稀土元素具有截然不同的页岩标准化配分模式,东半湖区为轻稀土富集型,西半湖区为重稀土富集型,说明巢湖东西湖区具有明显不同的物质来源。
3.
We also discuss the source and transport characteristics of the grain in the target area according to the sediment dynamics technique.
依据沉积动力学方法,探讨了研究区颗粒物的物质来源和运移特征。
6) material source
物质来源
1.
Ore-forming material sources of Fangniugou pyrite polymetallic deposit,Jilin;
吉林放牛沟多金属矿床成矿物质来源
2.
Research on sedimentations and material sources in the eastern South China Sea;
南海东部海域的沉积作用和物质来源研究
3.
Grain-size distribution and material source analysis of loess on the nort heastern margin of the Qinghai-Tibet Plateau;
青藏高原东北缘黄土粒度组成及物质来源分析
补充资料：土壤母质
又称“成土母质”。指岩石风化后形成的疏松碎屑物。是土壤矿物质的来源，其矿物组成、化学组成及机械组成(颗粒大小)，影响了土壤的形成和性质。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条