词汇	nivan
释义	nivan 材尼凡镍铬钒钢
随便看	pressure base factor pressure-base factor pressure-bearing pressure-bearing equipment pressure-bearing jacket pressure bearing layer pressure-bearing plate test pressure bearing surface pressure-bearing surface pressure-bearing test pressure beating element pressure beck pressure behavior pressure bell pressure below the atmospheric pressure belt pressure bend and elbow pressure-bending member pressure beneath foundation pressure between rolls pressure between the rollers pressure-biased valve pressure bias load pressure biological aerated filter pressure bittern