英语人>网络例句>isotope 相关的网络例句
isotope相关的网络例句

查询词典 isotope

与 isotope 相关的网络例句 [注:此内容来源于网络,仅供参考]

Field investigation and analyses of the grain size, geochemical, stable carbon isotope etc climate proxies all indicate that this region, in about 14000aBP, u nderwent the expansion of the swamp. Subsequently, the swamp, because of aridity , began to decrease in area, and even disappeared. This process was followed by an immediate flooding period. The region, after the Younger Dryas cooling event (108000~10200aBP), came into the warming period of the Holocene, and then clima te in the region fluctuated subsequently.

张强通过区域地貌调查及对南京浦镇林峰桥剖面沉积物进行粒度、地球化学和稳定碳同位素等环境替代指标的分析研究,结果表明:本区在14000aBP左右先后经历了沼泽扩张期,此后气候变干,沼泽开始退缩,直至消失,在经过了长时间的沉积间断后又经历一次洪水泛滥期。

To explore the climatic implication of compound-specific hydrogen isotope ratios of sedimentary n-alkanes, the author sampled shallow sediment cores respectively from the climatically and environmentally distinct basins Qiangyong Glacier Lake,Kongmu Co Lake,Nam Co Lake, Keluke Lake and Xiao Qaidam Lake along a S-N transect on the Tibetan Plateau for the extraction and analysis of these biomarkers.

本文分别在青藏高原南部的大枪勇错、空姆错,中部的纳木错以及东北部的克鲁克湖和小柴达木湖钻取了浅岩芯,通过对沉积物中正构烷烃的提取分析和单体氢同位素比值的测定来探讨该类生物标志物单体δD值的气候指示意义。

Vitrinite and desmocollinite have a relatively low potential of hydrocarbon generation. The stable carbon isotope composition of their pyrolysis oils is heavier than that of sporinite, cutinite and oils derived from coal-bearing strata. It seems that they cannot be major macerals to generate oil, even if they occupy a majority of proportion in the organic matter of coal and coaly shale, and that they can be good gas-prone macerals at the stage of high-maturity to over-maturity.

镜质体和基质镜质体的生油潜力相对较低,其生成的液态烃类的碳同位素组成比一般煤系原油重得多,而且这些组分本身对液态烃具有较强的吸附力,尽管其在煤系有机质中所占的比例很大,仍然难以成为生成液态石油的主要显微组分,只能在高成熟演化阶段成为良好的生气显微组分。

The concentration of cosmogenic isotope in rock surface is a function of age, production rate, erosion rate and uplift rate. Using this model, we can calculate the exposed age.

岩石中生成的宇生核素的浓度是其生成速率、累积时间、侵蚀速率和地面隆升速率的函数,根据其原理来计算出地貌面的暴露年代。

The achievements have been made such as the records revealed by climatic proxies,show the instability of the East Asian monsoon climates and warm phases; a short term warm event and a cold reversal before the termination of the penultimate; cold Henrich fingerprint in lake sediments of the Tibetan Plateau; the instability of oxygen isotope stage 5e and Holocene climates; the spatial variability of East Asian monsoon precipitation during the Younger Dryas and the increased variability of the recent centennial East Asian monsoon precipitation.

发现在倒数第二次冰期结束前一次持续时间非常短暂的气候温暖事件和寒冷回返事件,发现我国青藏高原湖相沉积物中保存了Henrich寒冷事件的烙印、氧同位素阶段5e和全新世的不稳定性,Yonger Dryas东亚季风降水的空间变率以及最近100年东亚季风降水变率增大等。

So we adopted the isotope marking method in order to know the distribution of BBP in male and female mice. The result indicated 〓H-BBP presented the first-order kinetics and matched the open two-compartment model. Distributional half-life was about 20 minutes and eliminable half-life was about 6-7 hours. As α(the speed constant of distributional phase) was about ten times β(the speed constant of eliminable phase), this compound had a fast distribution and a low elimination.

为了揭示BBP致毒有明显性别差异的原因,采用同位素标记方法示踪BBP在雄、雌动物体内的归趋,结果表明:BBP在动物体内呈一级动力学线性过程,符合二室开放模型,分布半衰期为20min左右,消除半衰期为6-7hr左右,分布相的速度常数α是消除相的速度常数β的10倍左右,说明该化合物在体内的分布较快、消除慢的特征。

In order to meet the analysis requirement, this article introduced the main technological method and concrete application of the independently developed isotope X fluorogenic analysis instrument.

为满足分析要求,介绍了自行研制的同位素X射线荧光分析仪的主要技术方法及具体应用。

In order to meet the analysis requirement, this article has introduced the main technological method and concrete application of the independently developed isotope X fluorogenic analysis instrument. The practical application effect indicated this analyzer when carries on the on-line survey to industry coating and automobile coating thickness its measuring accuracy may reach 2%~4%.

众所周知,产品和金属元件表面镀层或防腐层厚度是与产品质量与性能相关的重要指标,为满足分析要求,采用自行研制的同位素X射线荧光分析仪,对工艺铁基镀锌、铁基镀镉和汽车涂层3类样品以美国NBS系列标准为参照,采用发射法和吸收法进行了应用实验,并对在线镀锌板生产线进行了实验。

However, although marine planktonic foraminiferal boron isotope has great potential to be a proxy for atmospheric pCO2, further studies on calibrations are required.

不过,尽管海洋浮游有孔虫中的硼同位素作为大气二氧化碳浓度的替代指标很具有潜力,但还需要进行更加深入地研究。

In addition, planktonic foraminiferal species of P. obliquiloculata shows a good relation with the oxygen isotope record and acts as a paleoceanographic indicator even during the last glacial in the Okinawa Trough.

此外,浮游有孔虫Pulleniatina obliquiloculata与氧同位素记录有很好的对应关系,表明它是冲绳海槽末次冰期以来的一个可靠的海洋环境指标。

第35/53页 首页 < ... 31 32 33 34 35 36 37 38 39 ... > 尾页
推荐网络例句

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。