level 113怎么过
俄罗斯原油质量?
俄罗斯原油质量?
俄罗斯的石油质量虽然也是上乘的,但是碍问于自己的一些工业设备,以及对欧美国家的设备依赖,导致自身的石油产量相对不稳定。
俄罗斯已证实石油储量600亿桶,占问全球储备比例6.2%,每日石油产壹量1070万桶,每日石油消耗问220万桶,其储存可供其使用113年。
张家口景点英语介绍?
张家口市,又称“张垣”、“武城”,是河北省下辖地级市,位于东经113°50′~116°30′,北纬39°30′~42°10′之间。全市南北长289.2千米,东西宽216.2千米,总面积3.68万平方千米。
Zhangjiakou, also known as
全球鹰”装置一台劳斯-来斯AE3007H涡扇喷气发动机为什么这么省油?
因为AE3007H是高旁通比的双转子的轴流涡轮风扇。
省油的原因有:
1 风扇是宽弦设计的。
2 5级可调静子叶片。
3 环形燃烧室
4 全权数字控制系统。
Technical data
The AE3007 turbofan engine is a high bypass (5:1), two spool, axial-flow engine, flat rated at 7,580 pounds of thrust, uninstalled, sea level static to 113°F ambient temperature.
The design features include:
wide-chord single-stage direct-drive fan
14-stage axial-flow compressor with inlet guide vanes (IGVs) and five variable-geometry-stator stages
full annular type combustion liner with 16 fuel nozzles and two high tension igniters
two-stage HP turbine driving the HP compressor
three-stage LP turbine to drive the fan
dual aircraft mounted, fully-redundant FADECs
accessory-drive gearbox for engine-driven accessories and air system for aircraft pressurisation, engine starting, and cross bleed starts