chainage

The Northern Section of the Tai Lam Tunnel extends from Chainage 18+212 to 21+518, as shown on Figure A.

如图A所示，大榄隧道北段链距由18+212延展至21+518。

The applied Q sign in the "Discharge"- or "Q-dH-curve"- fields controls the pump direction (with or against chainage).

设了泵以后，当泵执行操作时，从此位向游量也即泵出量。