碳

The carbon isotopic composition of soil organic matter has been widely used to reconstruct the history of climate and vegetation.

土壤有机碳同位素地球化学在气候和植被恢复方面的研究已得到广泛应用，但目前对不同类型、不同时代的土壤总有机碳同位素样品制备过程的系统研究较少。

When you start up on a very low carbohydrate diet such as Atkins or a Ketogenic diet you enter into what is referred to as ketosis where your body switches from running on carbohydrates as fuel to using a source called ketones.

当你开始每天食用低碳水化合物的食品例如减肥专家或者生酮膳食，也就和糖尿病酮症患者的饮食差不多了，即本来以碳水化合物为身体主要能量变成依赖酮体作为身体能量。

When you start up on a very low carbohydrate diet such as Atkins or a Ketogenic diet, you enter into what is referred to as ketosis, where your body switches from running on carbohydrates as fuel to using a source called ketones.

当你开始每天食用低碳水化合物的食品例如减肥专家或者生酮膳食，也就和糖尿病酮症患者的饮食差不多了，即本来以碳水化合物为身体主要能量变成依靠酮体作为身体能量。

On the other hand, reaction of lactol derived from D-mannose and D-glucose with Grinard reagent of propargyl bromide also proceed both withanti stereoselectivity and with high anti-specificity.

链增长及目标分子中的碳碳双键是由一步Wittig反应和一步末端炔的烷基化再部分氢化而获得，双键构型-选择性可达到95％以上。

At present cable industry leading products are Lasi Ta round of the types of tungsten carbide, steel ring, ceramics La Sita round, guided round of spraying line extension and porcelain kettle spray WC.

目前主导产品是线缆行业的各类碳化钨拉丝塔轮、钢圈、陶瓷拉丝塔轮，导轮喷瓷及伸线釜喷碳化钨。

Carbohydrate contents were determined to study the carbon metabolism in bulbs of Lilium Oriental hybrid Sorbonne'.

本文通过测量不同发育时期的碳水化合物含量来研究东方百合&Sorbonne&的碳代谢。

The carbon/carbon throat and copper sintered tungsten nozzle were wound in the middle of longtail nozzle insulation .

整体成型的长尾管通过复合缠绕方式将碳/碳喉衬与钨渗铜喷管组件黏结包裹在尾管绝热层内部。

The thesis studied the total exocellular proteins, reductant sugar and the pectinase enzyme activity of CXJZ95-198 strain in glucose, mannose, xylan, mannosan and pectin culture media.Compared enzyme activity of pectinase, xylanose and β-mannanose. The secreted proteins in ferment fluid from different culture media were analysed by SDS-PAGE electrophoresis.

本论文对CXJZ95-198菌株在葡萄糖、甘露糖、木聚糖、魔芋粉及果胶五种不同碳源培养基中胞外酶蛋白质总量、还原糖及果胶酶活性的影响进行了研究；对果胶酶、木聚糖酶及β-甘露聚糖酶在甘露糖培养基中的酶活进行了比较；对CXJZ95-198菌株在不同碳源培养基中的发酵液在SDS-PAGE电泳中分泌出的蛋白带作了比较；对CXJZ95-198菌株所产生的胞外酶系中果胶酶进行了分离纯化。

The CNTs template with average diameter of 20～40nm was functionalized by mercapto groups in advance.The self-assembling principle of gold nanowires was investigated in this work.

以管径为20～40nm的多壁碳纳米管为模板，在经巯基修饰的碳纳米管表面定向沉积一薄层纳米金微粒，从而制得了一维金纳米线，并对纳米金线的自组装原理进行了研究。

One-dimensional gold nanowires were prepared by deposition of gold nanoparticles onto the surface of carbon nanotubes. The CNTs template with average diameter of 20～40nm was functionalized by mercapto groups in advance.

摘 要：以管径为20～40nm的多壁碳纳米管为模板，在经巯基修饰的碳纳米管表面定向沉积一薄层纳米金微粒，从而制得了一维金纳米线，并对纳米金线的自组装原理进行了研究。

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。