upper trace 中文意思是什麼
upper trace
解釋
上掃描線-
The trace element compositions and sr - nd isotopes suggest that the upper mantle beneath the studied area were subjected to multiple episodes of metasomatism, probably by small melt fractions derived from the asthenospheric mantle
微量元素和sr - nd同位素特徵表明該區上地幔經歷了多期地幔交代作用，交代介質可能是源自軟流圈的小體積熔體。 -
Based on the analysis of the data of carbon nitrogen isotopes and trace elements such as sr, ba ca et al. of the two pieces of excavated human bones of late period of dawenkou culture and period of chunqiu and zhanguo in upper shu river in shandong province, the research applied the analysis of carbon nitrogen isotope and trace elements into the study of ancient diet
摘要本研究通過對山東沐河上游大汶口文化晚期及春秋戰國時期2塊人骨的碳、氮同位素分析和無機成分的掘、鋇、鈣等微量元素分析，探討了同位素和微量元素分析在古代人類食物結構研究中的應用問題。 -
There are four characteristics of the evolution of tidal creek as follows : ( 1 ) in the initial stages, tidal creek develops by continuous eroding trace to the source and depriving of the top of other tidal creeks. ( 2 ) the transverse moving of tidal creek occur mostly in the lower part, the middle part and the outlet take second place, and the upper part is more stability. ( 3 ) the different level branches of tidal creek transform into each other in the whole evolution course
潮溝的演變具有以下特點： （ 1 ）潮溝在形成初期，不斷進行溯源侵蝕和襲奪以擴大集水面積而發展壯大， （ 2 ）潮溝的側向移動主要發生在潮溝的下段，中段和口門次之，上段最為穩定（ 3 ）不同級別的支潮溝之間處在不斷地相互轉化過程之中。 -
Studies on geology of the deposits and geochemistry of trace elements, rees, isotopes, ore - forming fluids show that the ore - forming materials came from varied sources. ore - forming materials of the tianbaoshan deposit was chiefly derived from different sedimentary rocks of the upper crust and orogen, while those of the daliangzi deposit mainly from the sinian dengying formation. meteoric waters were the major source of the ore - forming solution
礦床地質特徵以及常微量元素、稀土元素、同位素、成礦流體等地球化學特徵的研究表明，礦床成礦物質是多來源的，天寶山礦床成礦物質主要來自上部地殼和造山帶各種沉積巖，大樑子礦床成礦物質主要來自震旦系燈影組地層；兩個礦床成礦溶液主要來自大氣降水；硫大部分來源於同時期的海相沉積地層（震旦系燈影組）中被細菌還原的海水硫酸鹽。 -
It increases the precision of analysis to use differential spectrophotometry in high and trace contents. it has higher application value and upper popularization worth
摘要用示差分光光度法進行高含量或痕量物質的分析，使吸光度落在最佳測量范圍，增大了測量方法的精確性，具有較高的應用價值，值得推廣。
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