div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=eee-2020-truss-bridge-suspension-bridge-a-simple-bridgehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: 주아카데미과학 2020Truss Bridge Suspension Bridge A simple bridge design uses beams to support the upper roadway An arch bridge uses its semi-circular arch shape to loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentsnetreader036viewer202207130260a80aa290e0513f421ededdhtml5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=eee-2020-truss-bridge-suspension-bridge-a-simple-bridgehtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: 주아카데미과학 2020Truss Bridge Suspension Bridge A simple bridge design uses beams to support the upper roadway An arch bridge uses its semi-circular arch shape to loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentsnetreader036viewer202207130260a80aa290e0513f421ededdhtml5thumbnails2jpg width=140 height=200 divdiv