氫元素 的英文怎麼說
中文拼音 [qīngyuánsù]
氫元素
英文
protium-
The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements
摘要近20年由於氣相同位素比值質譜儀的改良和氫、氧、碳、氮和硫等穩定同位素的廣泛研究，穩定同位素的研究技術已實質增加我們對于這些元素在自然生態系中生地化循環的了解。Hydrogen and oxygen are the constituent parts of water
氫和氧是構成水的元素Abstract : several - aromaticamino ketones, which were designed according to some hypothetical models of the cyclooxygenase and 5 - lipoxygenase active sites, were synthesized by an amino exchange reaction. the structures of the eight new compounds were confirmed by ir, 1h - nmr and elemental analysis. the results of the pharmacological tests showed some of the investigated compounds had significant anti - inflammatory activity on croton oil - induced ear edema of mice
文摘:根據環氧化酶、 5 -脂氧化酶活性中心結構模型設計了一組-芳胺酮類化合物，並用胺交換反應合成了這些化合物.經紅外光譜、核磁共振氫譜及元素分析證實了8個未見文獻報道的化合物的結構.藥理實驗結果顯示.部分受試化合物在巴豆油誘發小鼠足趾腫脹模型中表現出一定的抗炎活性The molecular structure of ethyl cellulose was characterized and confirmed by elementary analysis, ft - ir and 1h nmr, and the compound obtained was final objective product
通過元素分析、紅外光譜和核磁共振氫譜對產物的分子結構進行表徵，確定所合成的化合物即為目標產物。Gingko ( gingko nuts ) contains a rich amount of protein, vitarmin and such trace elements as potassium, calcium, ferrum and so on ; and it contains in particular ginkgolic acid, hydro - ginkgolic acid, ginnol and some other special substances, which can offer great benefit to the pregnant women in their functional regulation either before and after childbirth
銀杏（白果）含有豐富的蛋白質、維生素以及鉀、鈣、鐵等微量元素，特別含有銀杏酸、氫化銀杏酸、銀杏醇等特有物質，對孕婦產前產后機能調節十分有益。The element hydrogen comprises 90% of the matter in gaseous nebulae.
元素氫占氣體星雲物質的90。After hydrogen, the atom with the simplest structure is that of helium.
在氫元素之後，氦的原子結構最簡單。Water consists of hydrogen and oxygen.
水由氫和氧二元素合成。Water is a compound containing the elements hydrogen and oxygen.
水是含有氫元素和氧元素的化合物。It gets the hydrogen and helium right
根據結果表示，氫元素和氦元素都比較正常。But after that, the hydrogen begins to run out
在那之後，氫元素將被消耗殆盡。The elements hydrogen and oxygen combine to form water
氫元素和氧元素構成了水Water is composed of the elements hydrogen and oxygen
水是由氫元素和氧元素組成的Carbon and hydrogen analysis meter
碳氫元素分析儀Determination of carbon and hydrogen content for carbon fiber and its products
炭纖維及其製品碳氫元素分析方法The star used to be like the sun, a “ main sequence ” star that burns hydrogen by nuclear fusion, producing helium
該恆星和太陽一樣是一顆主星序恆星，氫元素通過核裂變生成氦元素。This is composed of a mixture of deuterium ( a rare isotope of hydrogen ) and lithium ( a light metal )
核彈的主體部位由一種氘與鋰的混合物組成，氘是一種稀有的氫元素的同位素，而鋰則是一種輕金屬。Rubber materials, containing large quantity ' s hydrogen chemical elements which can rise the valid protection function to neutron radiation, and having good molding technology and low cost, are used as interlayer of complex armor or inserts in domestic and international tank armor vehicles
橡膠中含有大量的氫元素，對中子輻射可起有效的防護作用，而且其成型工藝性好、成本低，國內外坦克裝甲車輛的復合裝甲夾層或內襯均採用橡膠作為防核輻射材料。It shows that unquanified results of silver strip corrosion of jet fuel mainly result from hydrogen sulfide and element sulphur
結果表明，硫化氫、元素硫是導致噴氣燃料銀片腐蝕不合格的主要原因。Influences of hydrogen sulfide, element sulfide, mercaptan, sulphuring ether, disulfide individually on silver strip corrosion of jet fuel, and of element sulphur coexisting with other sulfide on silver strip corrosion of jet fuel were studied
考察了硫化氫、元素硫、硫醇、硫醚、多硫化物等單獨存在時對噴氣燃料銀片腐蝕的影響；同時研究了元素硫與其它硫化物以不同濃度混合時對噴氣燃料銀片腐蝕的影響。分享友人