公共事业振兴署 Works Progress Administration ; WPA

大韩贸易振兴公社 KOTRA

共振公式 resonance formula

多能级共振公式 many level resonance formula

公害振动 Vibration pollution

珠海振戎公司 Zhuhai Zhenrong Corp ; Zhuhai ZhenRong Company

韩国放送广告振兴公社 KOBACO

西门子磁共振有限公司 facility management engineer ; product support engineer ; installation engineer ; equipment engineer

公害振 Vibration pollution