曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
4. major [ 'meid ] a. 主要的;较大的
5. feature [ 'fi:t ] n. 特征;特点;面貌
6. rainfall [ 'reinf :l ] n. 雨量降雨(量)
7. return [ ri' t:n ] n. 回波
8. azimuth [ 'æzim ] n. 方位(角)
9. depend on [ di'pend ] 取决于;依赖
10. shape [ eip ] n. 形状;形式; 样子
11. R/T = Receiver/Transmitter 收发机(装置)
12. tilt [ tilt ] v. 倾斜;俯仰运动
13. antenna stabilization [ steibilai'zein ] 天线稳定(性)
14. clutter [ 'klt ] n. 杂(乱回)波;地面反射干扰
15. suppression [ s'pren ] n.抑制;排除
16. microprocessor [ mai'kr 'prouses ] n. 微处理机
17. adjust [ 'd st ] vt. 调节
18. detent [ di'tent ] n. 销;锁定
19. CAL = calibrate [ 'kælibreit ] vt. 校准;检验;测定
20. switch to 转到;换到
21. only if 只有在…的时候才…
22. interlock [ int'l k ] v. [ 'intl k ] 互锁;联锁
23. at any one time 在任何一个时刻
24. turn on 打开;接通;开动;朝向
25. turn off 关闭;断开;停住;避开
26. for a (the ) second time 第二次
27. narrow [ 'nærou ] a. 狭窄的
28. pencil beam [ 'pensl ][bi:m ] 锐方向性射束; 铅笔波
29. back and forth 来回地;前后地
30. sweep [ swi:p ] v. ; n. 扫掠;扫射
31. horizon [ h'raizn ] n. 地(水)平线
32. antenna pedestal [ 'pedistl ] n. 天线(基)座
33. diameter [ dai' æmit ] n. 直径
34. flat plate [ flæt ][pleit ] 平板
35. make up 组成;形成
36. phased array radiator 相控阵发射器
37. feedback [ 'fi:dbæk ] n. 反馈
38. scan [ skæn ] n. ; v. 扫描;搜索
39. stepper motor [ 'step ]['mout ] 步进马达
40. via [ 'vai ] prep. 经由;通过
41. elevation [ eli' vein ] n. 标高;仰角;升降;俯仰
42. disable [ di'seibl ] vt. 无效;不能…;无能力
43. waveguide [ 'weivgaid ] n. 波导(管)
44. rigid [ 'rid id ] a. 坚硬的;刚性的
45. quick-disconnect 快速断开
46. clamp [ klæmp ] n. 支架;夹具
47. flexible [ 'fleksbl ] a. 柔软的;可弯曲的
48. zero monitor 零位监控器
49. incremental monitor [ inkri'mntl]['m nit] 增量监控器
50. heavy [ 'hevi ] a. ; n. 重的;大量的
51. appear [ ' pi ] vi. 出现;显现
52. moderate [ 'm drit ] a. 中等的
53. light [ lait ] a. 轻的;少量的
54. message [ 'mesid ] n. 信息
TEXT
[1] The weather radar (WXR) system provides the flight crew with a display of
moisture-laden weather formations or of major terrain features.
The weather radar system transmits radio frequency (rf) pulses in a 180-degree
arc forward of the airplane. Rainfall or terrain features reflect the pulses back to
the airplane and are processed . The time between the transmission and the
reception of these returns will determine the rainfall or terrain range while the
antenna position determines the azimuth.
Fig. 29-1 WXR introduction
[2] The weather radar returns are shown on EHSI. For rainfall returns, the
amplitude depends on the rainfall intensity. This allows the system to show
areas of various weather conditions using different colors. For terrain returns,
the amplitude depends on the characteristics of the ground surface. This allows
the system to show the shape of major ground features.
[3] A weather radar system consists of a receiver/transmitter (R/T), an antenna,
control panels and indicators (EHSI). The WXR control panel provides mode
selection, antenna tilt control and system gain control. The control panel also
allows for the selection of antenna stabilization and ground clutter suppression.
A microprocessor within the control panel converts each switch position into a
digital format and transimts the data to the transceiver using an ARINC 429 data
bus.
Fig. 29-2 WXR control panel
GAIN
The system gain may be adjusted in the WX, WX+T, or MAP modes by the
GAIN control. The control has ten detented positions including the CAL
position, where the system gain is automatically calibrated.
TILT
The antenna tilt position is controlled by the TILT control. The tilt range is
from 15 down to 15 up.
WX
Pushing the WX pushbutton switches the R/T unit to the weather mode, and
weather data will be shown on the EHSI.
WX+T
Pushing the WX+T pushbutton switches the R/T unit to the weather plus
turbulence mode, and turbulence as well as weather data will be shown on the
EHSI . The turbulence mode is active only if a range of 40 NM (nautical mile)
or less is selected on the EFIS control panel.If a range greater than 40 NM is
selected, only weather data will be shown.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
航空工程英语基础（中英文对照）(47)
