【例4】倾斜微压计 h sIn a h=h+h,=l(sin a+) h=l Ap=p2-P,=pgh=pg/ sin a+1 p2 Pi h? a二r Al 优点:可以测量较小的压强 1111 【例4】倾斜微压计 ) A A h h h l( α 2 1 1 2 = + = sin + p2 l p1 a h1  0 h2  A2 A1 2 1 2 A A h = l h1 = lsin α )l A A Δp p p ρgh ρg( α 2 1 2 1 = − = = sin + 优点：可以测量较小的压强