Experts said the difficulty of sending the probe into orbit was equal to hitting a small ball from Paris and landing it in a hole in Tokyo.
专家表示，将探测器送入轨道的难度堪比于从巴黎击出一个小球，然后让它落在东京的一个洞里。
2
Detector installed in the crane boom end, at the top of the metal ball as a detecting probe, can detect electric field around the wire.
检测器安装在起重机臂端，其上端的金属球作为检测探头，可以检测电线周围的电场。
3
To get rid of the sharp Angle and the grinding tracks on the probe, the tip will be polished by roll-typed grinding wheels to become sharp, round, flat or ball pointed.