”淨壓力差”，使得帆面可以受到壓力，此即風不用打在帆面上，也能造成力作

”淨壓力差”，使得帆面可以受到壓力，此即風不用打在帆面上，也能造成力作用

結果 (英文) 1:

"Net pressure differential"
, so that the sail surface can be influenced by
the pressure, namely the wind sail surface not hit, can cause force

結果 (英文) 2:

"Net pressure difference"
so that the sail steam can be subject edgy
To the pressure, this is the wind does not need to hit the sail, can also cause force action

結果 (英文) 3:

”Net pressure difference "
, so that the sail can be
To the pressure, that is, the wind does not hit the sail surface, but also can cause force effect