rod area

Zheng ( state ) Rod ( yang ) Bian ( Kaifeng ) and the area along the highway line.

郑 ( 州 ) 洛 ( 阳 ) 汴 ( 开封 ) 高速公路傍区而行.

On the basis of analysing the operational principle for the hydraulic lock, the cause of the datum discreteness for the recovery time is found out, it is that the control rod in the hydraulic lock affected the effective flow area of the throttle gate.

在分析液压锁工作原理的基础上，找出空载恢复时间数据离散的原因，是液压锁内的控制杆在运动过程中影响了液压锁轴上节流孔的有效流通面积。

The properties of lighting forming and changing are obtained by measuring corona current through the lighting rod and ground electric field inside and out of protection area.

测量统计了避雷针的电晕电流及避雷针保护区内外地面电场的变化情况，总结出该地区的雷电形成、发展变化规律；

Controllable discharging lightning rod; High altitude area; Installation plan; Lightning protection effect.

可控放电避雷针；高海拔地区；安装方案；防雷效果。

The relative reliable way is using fixed minor slope angle of supporting rod or trestle and changing the height of camera to obtain different sample area.

认为比较可靠的方法是使用固定小倾斜角的支竿或支架，用改变高度调节取样面积。