substance index 中文意思是什麼
substance index
解釋
物質索引-
The refractive index of a substance is determined by two properties known as the electrical permittivity and the magnetic permeability
物質的折射率由兩項性質決定，分別是介電常數和磁導率。 -
The persistence of dry warmer sector in winter in northwest of china is the index of its occurrence. moreover, the sand over the ground surface also provided a favorable substance condition. sand - dust weather in qingdao occurred frequently in spring
蒙古氣旋和西北強冷空氣是「 3 . 20 」強沙塵暴最主要的天氣形勢和動力機制；冬季北方乾旱少雨、沙塵裸露面大提供了物質基礎。 -
The comparative ability of resources for bearing the pressure of population, the efficiency of resources utilization, the efficiency of energy utilization, the rate of resources reserves decrease, the surcharge of the resources, the resources possessed by per capita, the consumption of resources by per capita, the index of resources guarantee ' s degree, the gross consumption of substance, the intensity of the consumption of substance, and the productivity of substance and so on indexes for natural material resources were chose to construct a index system that could be used to tell the degree of the sustainable development for certain material flow ( short for mf )
本文簡要介紹了可持續發展及區域物料流的概念。選取相對資源承載力、資源利用效率、能源利用效率、資源儲量變化率、資源超載人數、人均資源佔有量、人均資源消費量、資源保證程度指數、物質消耗總量、物質消耗強度及物質生產力等指標建立了一套自然材料資源的可持續能力評價指標體系。概括介紹了中國西部的兩個典型省區和一個典型地區，即重慶、甘肅及攀枝花地區典型材料行業發展現狀。 -
The content of theaflavins is an important index of black tea ' s quality, are the major substance in black tea, which show significant antioxidative effect
摘要茶黃素是衡量紅茶品質的重要指標，也是紅茶中發揮生物學作用的主要物質，它有很好的抗氧化作用。 -
But if a substance with a higher index of refraction ? such as skin ? is pressed against the window, the light will be absorbed at the points of contact, a phenomenon called frustrated total internal reflection
但是如果有個折射率比較高的物質（例如皮膚）壓住窗口，位於接觸點的光就會被吸收，這個現象稱為受抑內全反射。
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