檢視真空度的原始碼

[[File:真空度.jpg|缩略图|[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E7%9C%9F%E7%A9%BA%E5%BA%A6%20%20%20%E6%90%9C%E7%8B%90&step_word=&hs=0&pn=0&spn=0&di=24640&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=3591301829%2C1704653783&os=1405597740%2C2240123293&simid=3443969246%2C293645211&adpicid=0&lpn=0&ln=503&fr=&fmq=1621570899871_R&fm=result&ic=&s=undefined&hd=&latest=&copyright=&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fimg.mp.itc.cn%2Fupload%2F20170421%2F0ecb584db53c4ad1ae963b9959ef0b27_th.jpg%26refer%3Dhttp%3A%2F%2Fimg.mp.itc.cn%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1624162914%26t%3D5484ca6b586e51fbdf0983bf964dc266&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bf5i7_z%26e3Bv54AzdH3FwAzdH3F8nc9b8mbl_d8cc9c&gsm=1&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 原图链接][https://www.sohu.com/a/135481689_215545 来自搜狐]]]
'''真空度'''是指处于真空状态下的气体稀薄程度。若所测设备内的压强低于大气压强，其压力测量需要真空表。从真空表所读得的数值称真空度。真空度数值是表示出系统压强实际数值低于大气压强的数值，即： 真空度=大气压强-绝对压强，绝对压强=大气压+表压（-真空度）。