isotope
美 [?a?s??to?p] 
英 [?a?s?t??p]
- n.同位素
- 網(wǎng)絡(luò)同位素是；同位素測年；同位素檢查
詞形變化
復數(shù)：isotopes 同義詞
英漢雙解
1. | 同位素one of two or more forms of a chemical element which have the same number of protons but a different number of neutrons in their atoms. They have different physical properties (= characteristics) but the same chemical ones |
| radioactive isotopes 放射性同位素 |
| the many isotopes of carbon 碳的諸多同位素 |
英漢解釋
英英解釋
例句
Both of the experiments proved effective, moreover the latter would be better since the stable isotope is harmless.
結(jié)果指出，兩種方法是等效的，由于穩(wěn)定同位素對人體無害，因而后者更有應用前景。
In atomic spectroscopy, the subject of isotope shifts is one of the few problems that links atomic and nuclear physics.
原子光譜中，同位素位移是少數(shù)幾個能夠將原子物理學和原子核物理學這兩個不同的物理學分支聯(lián)系起來的課題之一。
At present, the methods of isotope tracer and turbine flowmeter are universally used for testing annulus well in home oilfield.
同位素示蹤法和渦輪流量計法是目前國內(nèi)各油田普遍采用的環(huán)空測井方法。
But the nitrogen in the air was replaced with a nitrogen atom with a different number of neutrons, called an isotope.
但是空氣中的氮氣中的氮原子卻會被一個叫做同位素的有著不同數(shù)量中子的氮原子所替換。
And the heavier oxygen from a natural process that left more of the light isotope in the part of the nebula that made the sun.
重量較大的氧來自某種自然過程，在此過程中，大部分的輕同位素留在了形成太陽的部分星云中。
When a hurricane forms, it tends, initially, to rain water molecules containing the heavier isotope. At that point it is still over the sea.
颶風剛形成之初，通常位于海面上空，它所降落的雨水一般含較重氧同位素水分子。
The technique based on stable isotope labeling and mass spectrometry is one of the main supporting techniques for protein quantification.
基于穩(wěn)定同位素標記的質(zhì)譜分析技術(shù)是蛋白質(zhì)定量最常用的方法之一。
by contrast, the comprehensive evidence and oxygen isotope temperature may be close to the actual temperature.
而綜合證據(jù)與氧同位素則可能比較接近實際氣溫。
Nuclear Chemistry: radioactive chemicals, radiation chemistry, radiation chemistry, isotope chemistry, nuclear chemistry.
核化學：放射性化學品，輻射化學，輻射化學，同位素化學，核化學。
Experts have played down the dangers, arguing that the isotope of nitrogen known as nitrogen-16 lasts for only five seconds.
專家們說相關(guān)輻射危險性很小，因為氮的同位素氮16只會存在5秒鐘。
Measured isotope peak cluster data in a mass spectral range is obtained for a given calibration standard.
對于給定的校準標準，得到在質(zhì)譜范圍中的測量的同位素峰集群數(shù)據(jù)。
Of early bone metastases in general without any symptoms, bone isotope scan can be found to have bone lesions.
骨轉(zhuǎn)移早期一般無任何癥狀，骨同位素掃描可發(fā)現(xiàn)有病變的骨骼。
However, there is a very attractive reaction between deuterium and a light isotope of helium known as helium-3.
無論如何，在氘和一個氦的輕同位素也就是氦-3之間有一種吸引人的反應。
Recent developments of two mid-infrared tunable laser spectrometers dedicated to carbon isotope ratio determination are presented.
最近的事態(tài)發(fā)展的兩個中紅外可調(diào)諧激光光譜致力于碳同位素比值測定結(jié)果。
Isotope ratios of Pb contained in wares were measured using Time-Of-Flight Secondary Ion Mass Spectrometry(TOF-SIMS)without any references.
介紹了用飛行時間二次離子質(zhì)譜法對器物中的鉛同位素比值的測量。
The Daedalus spacecraft weighed around 50, 000 tonnes, almost all of which would have been a very rare Helium isotope called Helium-3.
代達羅斯飛船重約5萬噸，大部分都是它攜帶的燃料——氦3。
Methods of hydrochemistry and isotope were used to analyze the 7 springs issuing along the Huanglong Ravine.
本文采用水化學和同位素方法對四川黃龍溝沿途出露的7個泉點進行了分析。
The city's challenge, chiefly, is to dispose of cesium-137, a radioactive isotope with a half-life of 30 years.
這座城市面臨的最大問題就是處理銫—137，這是一種半衰期為30年的放射性同位素。
After seven rounds of bacterium-based selection, the enrichment of each round was tested by isotope labeled ssDNA binding assay.
對每一輪文庫標記同位素，結(jié)合實驗證實第五輪文庫富集程度最高。
The ratio of the silver-109 isotope to silver-107 turned out to be much higher in New World silver than in the European coins.
109同位素銀和107同位素銀在新世界銀的比例要比來自歐洲的銀幣高很多。
The selection of the desired species(element, isotope, and charge state)is certified by the signature of the entire mass spectrum.
所需物質(zhì)（元素、同位素及電荷態(tài)）的選擇，被全部質(zhì)譜的信號特征所證實。
Its most durable isotope survives only about 200, 000 years-a minute span on a stellar scale.
最持久的同位素只能存在大約二十萬年--這在恒星的尺度上是一個很短的時間。
But the team found that on the Moon it was about 25 times that of the terrestrial chlorine isotope ratio.
但是研究團隊發(fā)現(xiàn)在月球上氯的同位素的比率大約是地球上的25倍。
Studies of Pb, S, H, O isotope geochemistry indicate that the mineralization resources were from deep source fluid and rocks of the strata.
鉛、硫、氫、氧同位素地球化學研究表明，成礦物質(zhì)來源于深源流體及地層巖石。
These cancers can be prevented if children are given pills containing the non-radioactive isotope of iodine soon after exposure.
這些癌癥其實是可以避免的，只要在受到輻射之后，馬上給兒童們服用不具有放射性的碘的同位素做成的藥片。
The selection of the desired species(element, isotope, and charge state)is certified by the signature of the entire mass spectrum.
所需物質(zhì)（元素、同位素及電荷態(tài)）的選擇，被全部質(zhì)譜的信號特征所證實。
These neutrons react with nitrogen nuclei, giving out a proton and producing the active carbon isotope 14.
這些中子跟氮元素的核子產(chǎn)生反應，釋放出一個質(zhì)子并產(chǎn)生出活性碳同位素14。
Hydrogen and oxygen isotope data line in the vicinity of the Meteoric water line, indicating meteoric water's enrollment at the late stage.
氫氧同位素數(shù)據(jù)在大氣降水線附近，指示了晚階段大氣降水參與的積極影響。
The stable hydrogen and oxygen isotope is an environmental isotope, which extensively exists in various kinds water.
穩(wěn)定性氫氧同位素是廣泛存在于水中的環(huán)境同位素。
Neutron flux characterization of a peripheral target position in the high flux isotope reactor.
高通量同位素反應堆中靶子位置周邊中子通量特征…[中國核科技信息與經(jīng)濟研究院]。
Another isotope, lithium-6, is overabundant: there may be as much as 1000 times too much of it.
而另一種鋰，即同位素鋰-6卻是過于豐富：它的含量可能是過多的1000倍。
Initial Sr isotope ratios show that the ore materials of the deposit were derived from the host rocks or Precambrian basement.
鍶同位素初始比值測試結(jié)果表明大梁子鉛鋅礦床成礦物質(zhì)來源可能主要源自圍巖碳酸鹽巖或基底地層。
The mineral-fluid oxygen isotope exchange in granitic rocks is mainly a non-equilibrium one in an open system .
花崗巖-體氧同位素交換反應絕大多數(shù)為開放體系不平衡類型。
Indulging in an isotope-enhanced steak or chicken fillet every now and again could add as much as 10 years to your life.
經(jīng)常攝入富含同位素的牛排或者雞片可以使你多活10年。
Numerical estimation method of the Hydrogen isotope inventory in the hydrogen isotope separation system for fusion reactor.
聚變堆氫同位素分離系統(tǒng)中氫同位素存量的數(shù)值估算方法…[中國核科技信息與經(jīng)濟研究院]。
The technology of stable C, N isotope ratio is an effective method for geographical origin traceability of beef.
利用穩(wěn)定性碳、氮同位素技術(shù)是用于牛肉產(chǎn)地溯源的有效方法。
The results of groundwater isotope analysis show that the groundwater in the Yinchuan Plain has different recharge patterns.
地下水同位素特征表明銀川平原地下水具有不同的補給模式。
Isotope contamination and big porous formation are two problems which upset the interpretation of isotope water injection profile log.
同位素污染、大孔道地層是困擾華北油田同位素吸水剖面測井的兩大難題。
First, a neutron hits a lithium 7 isotope, which, although it consumes energy, produces both a tritium ion and a neutron.
首先，一個中子轟擊一個，盡管會消耗能量，但是它會產(chǎn)生一個氚和一個中子。
Stable isotope technique is a new, innovative approach to assess the source and natural attenuation of organic pollutants in environment.
穩(wěn)定同位素技術(shù)是近來發(fā)展起來用于識別和評價環(huán)境有機污染物來源和降解的新方法。
So if supersymmetry is true, there should be less of this isotope around than the Standard Model predicts.
因此，如果對超對稱性確信無疑，那么宇宙空間中元素同位素的存在就會比標準模式預測的要少。
Especially when split ratios were less than 1. 0, the uncertainty of the hydrogen isotope determination results increased.
特別是當分流比較小（小于1）時，導致氫同位素值測定結(jié)果的不確定度增大；
