碳

The process, sometimes referred to as "radiocarbon reading," involves measuring carbon decay.

过程中，有时称为"放射性碳含量，"碳涉及测量衰变。

Variations of radiolarian abundance, biogenic opal, organic carbon and grain size in this core indicate t...

该柱放射虫丰度、生源蛋白石和有机碳含量、粒度的分析显示，大约在氧同位素11、9～8.4、5～3和1期，高的放射虫总丰度、第四纪常见种丰度和始新世-渐新世种丰度大致对应于高的中值粒径和平均粒径，以及大约氧同位素5期以来增加的有机碳含量，表明此期间贸易风增强，搬运的陆源颗粒增大，北赤道洋流加强，导致上升流增强，表层水生产力提高，同时，南极底层流的活动也加强。

Afforestation ; reafforestation ; carbon sequestration project ; carbon sequestration management

造林；再造林；碳汇项目；碳汇管理

The concentration and inventory of SOC and the decreasing magnitude of SOC with the soil profile depth under all the studied reafforestation patterns were lower than those under shrubbery land conditions, which received the least impact of land use change.

9与农耕地相比，退耕还林实施5年后，大部分退耕模式下0～30 cm的土层SOC含量和碳密度都有不同程度的提高，但在整个0～60cm土层，SOC含量和碳密度没有显著变化(个别模式甚至还有一定程度的下降)。

To demonstrate the effects of this type black carbon on sorption and degradation of pesticides in soil,synthetic charcoals from burning of red gum chips at two different temperatures were mixed into a soil with different rates,the sorption and degradation kinetic of chlorpyrifos were determined.

通过吸附试验及降解试验分别测定了农药毒死蜱在添加不同含量两种黑碳的土壤中的吸附特征和降解动态，以阐明黑碳对土壤中农药降解的影响作用规律。

Genetic diversity of carbon-nitrogen cycle was relative to soil organic matters,total nitrogen,carbon-nitrogen ratio,available phosphor and water content with different degrees.

碳氮循环基因多样性与土壤有机质、全氮、碳氮比、速效磷和土壤含水量等生态因子有不同程度的相关。

Methods:Amperometry was employed to examine the electrochemical respondence of our developed glucose biosensor on additions of glucose.

用硅溶胶凝胶技术修饰电化学铂化处理的碳粉与葡萄糖氧化酶混合制成的碳糊电极，构成新型电流式葡萄糖传感器，并用电流分析法研究其对葡萄糖的响应。

Objective:The electrochemical behaviors of rhein at the multi-wall carbon nanotubes modified glassy carbon electrode have been studied.

目的：研究饮料中大黄酸在多壁碳纳米管化学修饰玻碳电极上的电化学行为。

In this thesis, we want to describe the new one-carbon chain extension and ring expansion of 1,3-diketones, which is the first report based on our knowledge.

本文在前人的研究基础上，首次发现了开链1，3-二酮增加一个碳原子的自由基链增长反应和环状1，3-二酮增加一个碳原子的自由基扩环反应。

In this thesis, we want to describe the new one-carbon and three-carbon chain extension and ring expansion of 2-aroyl-3,4-dihydro-2H-naphalen-l-one, which is the first report based on our knowledge.

本文在前人的研究基础上，首次开展了α—芳酰基苯并环己酮增加一个碳原子和三个碳原子的自由基扩环和链增长反应，以及自由基加成成环反应。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。