primary carbon

Primary study on carbon cycling in warm temperate deciduous broad-leaved forest

暖温带落叶阔叶林碳循环的初步估算

Environmental groups have long advocated such a compensation program because forests are efficient absorbers of carbon dioxide, the primary heat-trapping gas linked to global warming.

环保团体很久之间就倡导这样的补偿金项目，因为森林能有效地吸收二氧化碳，而二氧化碳是造成全球升温最主要的吸收热量的气体。

Plant net primary production ( NPP) of agriculture vegetation represents the capacity of sequestrating atmospheric CO2 in agro-ecosystem, and plays an important role in terrestrial carbon cycling.

农业植被净初级生产力代表了农田生态系统固定大气CO2的能力，是陆地生态系统碳循环的重要组成部分。

A higher carbon content in the steel was favorable to form short and thick primary dendrites as well as wider primary dendritic arm spacings ( PDAS) and coarsening columnar structure.

碳含量高，容易形成长宽比小的一次枝晶，并且一次枝晶臂间距增宽，容易形成粗大的柱状晶组织；

Steam/ carbon ratio control system of primary reformer

一段炉汽碳比控制系统

For initiator B, when temperature is less than 180 ℃, MAH first reacts with secondary carbon of EB-block, secondly reacts with tertiary carbon; when temperature is higher than 180 ℃, the reaction rate of MAH reacted primary, secondary, tertiary carbon are similar.

对引发剂B，在温度低于180℃之前，仲碳原子最易发生接枝反应，其次是叔碳原子，当温度高于180℃后，伯碳原子、仲碳原子和叔碳原子的反应速率差不多。

As an important component of the ocean carbon cycle, particulate organic carbon ( POC) is often used to estimate the primary productivity in the ocean: There are two main aspects in our study.

海洋中的颗粒有机碳（POC）作为碳循环的重要组成部分，可以用来估计海洋初级生产力水平。

In view of the shortcoming of high water carbon ratio and high energy consumption in traditional Kellogg craft, which is used in the primary reforming process of the existing synthetic ammonia fitting commonly, develops one kind of new low-water carbon ratio conversion catalyst.

针对现有合成氨装置一段转化工序普遍采用的传统Kellogg工艺存在的水碳比高、能耗高的缺点，开发出一种新型低水碳比转化催化剂。

Ocean primary productivity ( OPP) controls the exchange of carbon dioxide at the air – sea interface and plays an important role in the global carbon cycle and climate change.

海洋初级生产力（OPP）在全球碳循环中起着重要作用，在相当程度上控制着海–气界面CO2的交换，是全球变化研究中的重要内容。

A primary use of testing the weight percentages of nitrogen, carbon, hydrogen, oxygen and sulfur within a variety of solid or liquid explosive of pure organic compounds.

主要测试无爆炸性之各种固态或液态之纯质有机化合物中的氮、碳、氢、氧及硫之重量百分率。