单词	economy life
释义	economy life 经济寿命
随便看	balanced variation balanced vector measure balanced ventilation balanced ventilation system balance equipoise balance error balance escapement balance estate of the system balance eventually balance exactly balanced view balanced voltage balanced-voltage protection balanced voltages balanced vortex type combustion chamber balanced vortex type combution chamber balanced water temperature balanced wattmeter balanced wave amplifier balanced waveform balanced weave balanced weight lever balanced weight method balanced welding balanced wicket