1) N2O and CH4 emissions
N2O和CH4排放
1.
To evaluate the effect of cropping system on N2O and CH4 emissions and to identify the key factors controlling the emissions,a field experiment was carried out in 2003 at Jiangsu Academy of Agricultural Sciences.
研究结果表明,作物类型对农田N2O和CH4排放具有显著的影响。
2) CH4 and N2O emission
CH4和N2O排放
1.
To investigate impact of environmental factors and crop- growing on CH4 and N2O emissions, a field experiment with different levels of organic matter application under conditions of normal irrigation and permanent flooding was performed at a county of Jiangning near Nanjing during 2000 rice- growing season.
5t·hm-2)条件下各环境因素(包括土壤温度、灌溉水层深度和土壤Eh)对CH4和N2O排放的影响以及水稻生长与CH4排放的关系。
2.
5t/hm2) of organic matter (wheat straw) on CH4 and N2O emissions from rice field was studied under the conditions of conventional irrigation and permanent flooding inrice-growing season.
5t/hm2)对稻田CH4和N2O排放的影响。
3) N 2O and CH 4
N2O和CH4
4) CH4 and N2O
CH4和N2O
1.
The effect of long-term fertilization treatment(NPKS、CK、NPK and NKM)on CH4 and N2O emission from rice fields was observed by using the static chamber-GC theory with manual method.
采用静态箱-气相色谱法对长期不同施肥处理(NPKS、CK、NPK和NKM)的稻田CH4和N2O排放进行了观测。
5) N2O and NOx emission
N2O和NOx排放
6) emissions of CH_4 and CO_2
CH4和CO2排放
补充资料:“飞行车厢”ch-47
国别:美国
类型:直升机
型号:ch-47
美国陆军特种部队在选用直升机时,看上了波音公司生产的ch-47支努干”直升机。这 是一
种独具特色的直升机,它不像我们常见的那种单旋翼直升机,它有两副旋翼,分别安装在机头上
方和机尾上方,所以这种直升机又叫“纵列式双旋翼直升机”。它的机身就像一节火车的车厢,
这也是它得名飞行车厢”的缘由。
在ch-47的基础上,波音直升机公司又动了一些“内脏手术”,改进后(编号mh-47e) 的直升机电子系统有了很大提高,最主要的特点是,在驾驶舱中增设了一个由4部多功能显 示器组成的任务管理系统和一个任务辅助系统。
mh-47e可以利用副油箱和空中加油设备进行远距离飞行或快速越海飞行。改进后的mh- 47e除装有两挺12.7毫米机枪外,还可以携挂空对空导弹。它的旋翼可以折叠,并安装有 旋翼刹车装置。机舱外安装了悬吊回收装置。它的最大载重为6512千克,最大平飞速度 297千米/小时,实用升限2900米。目前,美国陆军特种部队已装备了50架mh-47e。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条