The pressure difference is maintain

The pressure difference is maintained by a filtrate receiver and a so called barometric leg.

Results (Chinese Traditional) 1:

壓差是由濾液接收器和所謂的氣壓腿維持的。

Results (Chinese Traditional) 2:

該壓力差是由濾液接收器和一個所謂的氣壓腿保持。

Results (Chinese Traditional) 3:

壓力差由濾液接收器和一個所謂的氣壓保持。