Nitrogen isotope compositions of groundwater reflect characteristics of contamination sources in the environment of well-drained soils and oxygenated ground waters.

在土壤排水良好自拍小视频福利在线、氧化的地下水環(huán)境中国产精品看黄网站，地下水的氮同位素組成反映了源的特征18污视频网站在线免费观看。

Nitrogen isotope co mpositions of groundwater reflect characteristics of contamination sources in th e environment of well-drained soils and oxygenated ground waters.

在土壤排水良好美女互摸互慰AV网站在线观看、氧化的地下水環(huán)境中肥老太操逼视频，地下水的氮同位素組成反映了源的特征无码在线观看视频。

A method using isotope dilution inductively coupled plasma mass spectrometry for the determination of trace Hg in vegetable-growing soil and vegetable samples was established.

建立了微波消解電感耦合等離子體質(zhì)譜同位素稀釋測定微量汞的方法。

Tin-bearing porphyry ; isotope ; material source ; South China

含錫斑巖午夜看了可以高潮的免费视频；同位素欧美一级aa大片高清在线；物質(zhì)來源；華南

Using the advanced analysis technology, such as inclusion measuring temperature, calcite cement's electronic probe and isotope analysis, and the water-core reaction theory, the paper sets up the diagenefic model of coal measures strata, time-temperature model and pore evolutionary model, and provides the basis for seeking the high efficient reservoirs.

利用包體測溫一级性生活A片、自生石英的氧同位素測定91黄色影院、方解石膠結(jié)物的電子探針和同位素分析等先進分析測試技術(shù)，結(jié)合水巖反映理論自偷自拍亚洲综合精品图片，建立了煤系地層的成巖模式和相應(yīng)的時間溫度模型和孔隙演化模式国产伦精品一区二区三区视频播放，為高效儲層的尋找提供了依據(jù)。

The influences of dead time of detector and the mass bias on the precision of determination of Uranium isotope ratio studied.

研究了檢測器死時間和質(zhì)量偏倚對鈾同位素比測量的影響一级欧美片视频免费播放，對比了三種檢測器死時間和質(zhì)量偏倚校正方法97人人超碰在线。

In order to promote the application of organic manure and chemical fertilizer in the rotation of Flue-cured tobacco rationally, the effect of different organic manure (crop straw, oil cake, fully-fermented pig manure) applied in preceding crops on availability of nitrogen fertilizer was studied by the methods of pot and micro plot experiment in field, using the Isotope 15N trace technique.

為進一步促進烤煙輪作周期內(nèi)有機肥和氮肥的合理施用亚洲韩国黄色网址，采用田間微區(qū)試驗和田間小區(qū)試驗相結(jié)合的方法，應(yīng)用穩(wěn)定性同位素15N示蹤技術(shù)一级a爰片，研究了前作施用有機肥對烤煙氮肥效應(yīng)的影響黄色网站在现免费观看。

After 16 weeks treatment there are different improvements in patients'clinical expression, pain symptoms, blood sedimentation test in laboratory, CRP test and wrist joints' bone video picture ROI with isotope 99Tcm-MDP.

經(jīng)16周初步臨床治療應(yīng)用中，患者在臨床表現(xiàn)又粗又大又长的免费视频、疼痛癥狀和實驗室血沉測定欧美精品九九99久在免费线、CRP測定和腕關(guān)節(jié)放射性核素99Tcm-MDP骨顯像ROI測定均有不同程度的改善。

The Sr isotopic growth periodicity is relates to the annual variation of Sr isotope in the surface layer of sea-water.

鍶同位素的周期性主要是由于附近大陸年周期性降雨量的變化所引起的网站视频你懂得，它不受生物生長作用的影響亚洲最新永久免费视频。

Strontium isotope stratigraphy relies on the fundamental principle that the marine strontium is isotopically homogenous world-wide at any time and the 87Sr/86Sr ratio of strontium in seawater of geological history has varied through time. By means of the 87Sr/86Sr ratio of marine carbonate which should record the original composition of sea water, we can date the marine sediments, research global events, such as history of basin subside, sea level change, orogenic events and palaeoclimate variation.

鍶同位素地層學(xué)根據(jù)地質(zhì)歷史中的任何時間全球范圍內(nèi)海水的德同位素組成都是均一的、海水87Sr/86Sr比值隨時間變化這一基本原理国产激情视频网址，利用代表原始海水的海相碳酸鹽的87Sr/86Sr比值確定海相地層的年代人妻一级片，研究海平面變化、造山運動国产亚洲小电影在线播放、古氣候等全球事件aaaaaawwwwww网站，在地層學(xué)、沉積學(xué)717电影网琪琪午夜理论、石油地質(zhì)學(xué)和礦床學(xué)等領(lǐng)域中有著廣泛的應(yīng)用前景欧美特黄一级AAAAA片。