forcing main的用法和樣例：
例句
- Or the pumps can discharge to a force main conveying wastewater under pressure to the treatment plant.
或崩可以將壓力污水干管中的廢水在壓力下輸送到污水處理廠。 - With two segments and midsection inflexion of main pipes, the irregular well positions were well represented and the length of the total main pipes was shorten by a long way.
該種管網布置方式是將每個方向伸出的干管分成兩段，中間拐彎，能夠較好地體現注汽井分布的不規則性。
