压力 + 功率单位换算

{"pa":{"label":"帕","symbol":"Pa","factor":1},"kpa":{"label":"千帕","symbol":"kPa","factor":1000},"bar":{"label":"巴","symbol":"bar","factor":100000},"psi":{"label":"磅力\/平方英寸","symbol":"psi","factor":6894.757293168}}

{"mpa":{"label":"兆帕","symbol":"MPa","factor":1000000},"atm":{"label":"标准大气压","symbol":"atm","factor":101325},"mmhg":{"label":"毫米汞柱","symbol":"mmHg","factor":133.322387415},"kgf":{"label":"千克力\/平方厘米","symbol":"kgf\/cm²","factor":98066.5}}

{"w":{"label":"瓦","symbol":"W","factor":1},"kw":{"label":"千瓦","symbol":"kW","factor":1000},"hp":{"label":"英制马力","symbol":"hp","factor":745.6998715823},"ps":{"label":"米制马力","symbol":"PS","factor":735.49875}}

{"mw":{"label":"兆瓦","symbol":"MW","factor":1000000},"btu":{"label":"BTU\/小时","symbol":"BTU\/h","factor":0.29307107017},"cal":{"label":"卡\/秒","symbol":"cal\/s","factor":4.184}}