Measurement of antenna gain using background temperature of sky as standard of calibration

1、

Studies of Test Field Effects on Large Circular Aperture Antenna Gain Measurement

测试场地对大型圆口径天线增益测量影响的研究

互联网摘选

2、

A new method for the measurement of the broadband HF antenna gain

短波宽带天线增益测量新方法

互联网摘选

3、

Finally, the method of changing the antenna gain curves was analyzed.

最后分析了改变天线增益曲线的方法。

互联网摘选

4、

A new integral-lift-base construction method for a tall antenna mast is presented to remove a hidden peril of switching off shock owing to immersion and to avoid suspending transmission for a long time resulting from the conventional construction method.

为消除电台发射塔基座浸水跳闸隐患，本文研究提出塔桅结构天线基座整体提升的新型简易施工法，以避免拆除铁塔重浇塔基，再安装塔身的常规施工法造成长时间停播的不良后果。

互联网摘选

5、

Besides, key construction technologies are introduced in detail, such as machinery selection, tower installation, measurement, welding and antenna mast installation.

详细阐述机械选型、塔楼安装、测量技术、焊接技术和天线桅杆安装的施工工艺和关键技术。

互联网摘选

6、

Synchronizing Lift for the Integrated Steel Antenna Mast of Bright Oriental Pearl Radio and TV Tower

东方明珠广播电视塔钢天线桅杆同步整体提升

互联网摘选

7、

Protective coatings on the antenna mast of Orient Pearl TV Tower in Shanghai

东方明珠天线钢桅杆腐蚀防护涂层

互联网摘选

8、

New Integral-Lift-Base Construction Method for Tall Antenna Mast

高耸塔桅天线基座整体提升简易施工法

互联网摘选

9、

Installing Roof Antenna Mast of High-rise Building by Upside-down Lifting Method

倒装吊升法安装高层建筑屋顶天线桅杆

互联网摘选

10、

On Characteristics of Deployable Antenna Mast and Satellite Coupled Vibration

可展天线臂与卫星间耦合振动特性研究

互联网摘选

11、

Stability analysis for heading antenna mast

航向台天线杆稳定性分析

互联网摘选

12、

The differences of the number of antennal sensilla between males and females were also found in other insects.

在其它类群的昆虫中，也发现同种昆虫雌雄个体感器数量存在差异的现象。

互联网摘选

13、

Observations of Antennal Sensilla of the Male Black Cutworm Moth with Scanning Electron Microscope

小地老虎雄蛾触角感受器的扫描电镜观察

互联网摘选

14、

Ultrastructure of Antennal Sensillae of Ten Insect Pests Infesting Stored Products

十种储藏物害虫触角感器的超微结构研究

互联网摘选

15、

Observation on external morphology of antennal sensillum for three species of Trichogramma by scanning electron microscopy

3种赤眼蜂雌蜂触角上感器的扫描电镜观察

互联网摘选

16、

Histology and Functions Study of the Antennal Gland of Penaeus chinensis

中国对虾触角腺组织结构和功能的初步研究

互联网摘选

17、

Directional Antennal Control Method Based on the Neighbors Awareness in Ad Hoc Network

ad hoc网络中基于邻居意识的定向天线控制方法

互联网摘选

18、

PC-Based Design of Antennal Control System in A Radar

基于PC机的某雷达天控系统设计

互联网摘选

19、

Objective To investigate effect of antepartum health education on delivery outcomes of primiparae.

目的评价健康教育在孕妇分娩结局中的作用和意义。

互联网摘选

20、

The effect of antepartum health education pathway of community health service center on birth status of newborns

社区卫生服务站产前健康教育路径对新生儿出生状况的影响

互联网摘选