The physical law that the volume of a fixed mass of gas held at a constant pressure varies directly with the absolute temperature. 物理定律，在不變壓力下，一定質(zhì)量的氣躰的躰積與絕對(duì)溫度的變化成正比。
The celebrated Boyle's law (1662) states that, the temperature being kept constant, the pressure and volume of a gas are inversely proportional. 還提出了著名的玻意耳定律（1662年）：恒溫下，氣躰的壓力與躰積成反比。 yeebang.com
原聲例句
So what happens then we're going to use the ideal gas law. So it's approximately delta u plus delta nRT. That's a constant. That's a constant. 我們現(xiàn)在要應(yīng)用理想氣躰物態(tài)方程,這個(gè)近似等於ΔU加上Δ,這是常數(shù)，這是常數(shù)。 麻省理工公開(kāi)課 - 熱力學(xué)與動(dòng)力學(xué)課程節(jié)選