例句與造句

1. The global change study is one of the most spectacular and interesting environment scientific questions in the 1990 s . the message of global change stores in tree rings , ice core , loess , underground water , lake sediment and deep sea sediment , all these proxies record the information of global change . with the advances in stable isotope techniques , the isotopic tracer records the message of climatic variation and becomes a powerful tool that can understand paleoenvironment reconstruction and modern environment changing
   全球變化研究是90年代以來最為引人注目和關切的環(huán)境科學問題之一。全球環(huán)境變化的信息儲存于樹輪湖泊冰芯黃土地下水和海洋沉積物等載體中，隨著穩(wěn)定同位素技術的發(fā)展，同位素示蹤劑指示環(huán)境變化的信息，成為了解古環(huán)境再造和現(xiàn)代環(huán)境信息變化的一個強有力的工具。
2. To let more domestic relevant researchers understand the applicable techniques of stable isotopes , this article not only introduces the principles of isotopes measurements by gas isotope ratio mass spectrometer , but also integrates the experiences of hydrogen , oxygen , carbon , nitrogen , and sulfur isotopes in agriculture and environmental applications that were described in papers
   為讓國內更多相關研究人員了解穩(wěn)定同位素技術的可利用性，本文描述氣相同位素比值質譜儀之分析原理，及整理氫、氧、碳、氮和硫等同位素在農業(yè)及相關生態(tài)環(huán)境研究上應用的文獻。
3. ( 6 ) the comparative study of stable isotope respond between qiangtang basin and middle - upper jurassic epoch section in the central italy indicated that the global sea level presented a general rising trend in five rise and fall cycles in middle - late jurassic epoch , whereas it presented a general falling trend of sea level in five rise and fall cycles in the studied area . regional tectonism and global sea level change play a controlling role in the relative sea level change of the studied area
   ( 6 )羌塘盆地與意大利中部中?晚侏羅世剖面穩(wěn)定同位素響應的對比研究表明，中?晚侏羅世全球海平面表現(xiàn)為在五次升降旋回中呈現(xiàn)上升的總趨勢，而在研究區(qū)表現(xiàn)為在五次升降旋回中海平面下降的總趨勢，區(qū)域構造作用和全球海平面變化共同對研究區(qū)相對海平面變化中起到控制作用。
4. Tree ring is a kind of natural archives , on which the isotopic analysis is important to study global climate and environmental change . the authors mainly provide a comprehensive introduction to the fractionation models of carbon , hydrogen and oxygen isotope in plants , their research techniques and the extract methods from cellulose . that results show isotopic tracer can record the message of climatic variation and has become a powerful tool for paleoclimate reconstruction and for the modern environment changing research . especially studying on pages , the cellulose isotopic analyses of imbedded old tree ring have become the mainly quantitative means of environmental evolvement . in addition , china is a typical monsoon country , research in tree ring stable isotope seasonal variation can give us a lot of important information on that . up to now , the research techniques and works on tree ring in our country are still in its earlier stage , and remain many limitations . it needs further accumulate basic research materials , intensify regional contrast and intercross studies on relative subjects
   尤其是在過去全球變化pages研究中，埋藏古木纖維素中的碳氫氧同位素分析已成為環(huán)境演化研究的主要量化手段。另外，對于中國這樣典型的季風氣候國家，開展樹輪穩(wěn)定同位素隨季節(jié)性變化的研究具有重要的意義。我國在樹輪研究方面起步較晚，研究方法和研究內容上也比較簡單，還存在不小差距，既要進一步積累基礎資料，又要做區(qū)域對比，加強與相關學科的交叉研究。
5. It's difficult to find stable isotopes in a sentence. 用stable isotopes造句挺難的
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