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person:(Lee, wang-yong)
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person:(Lee, wang-yang)
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person:(Lee, yang-yong)
Upright thrust actuator using chain direction conversion and upward thrust device using the same
Submarine vertical launch system capable of delaying the vertical rise time of the projectile
SUBMARINE HAVING TOWED ARRAY SONAR AND METHOD USING THE SAME
COMPOSITE MATERIAL LAYER STRUCTURAL INTEGRATED FUEL TANK AND AIRCRAFT COMPRISING SAME
Ballast water multi item water quality measuring device and improved measuring method using the same
Ultra Precision Machining of the Winston Cone Baffle for Space Observation Camera
POWER SWIVEL SYSTEM OF VEHICLE SEAT AND PLANETARY GEAR-TYPE REDUCTION DEVICE THEREOF