| 摘要 |
The regulator comprises a base (10) located at ground level having an upper part (13) and a lockable arm (14) which is rotatable together with the upper part (13) w.r.t. the base (10). Both the upper part (10) and the base (13) are provided with overlapping flanges and the electronic supply (17) and sensors (18) are contained in the space between (10) and (13). |
