姣忕背鐞嗚閲嶉噺璁＄畻鍏紡锛�
G=0.0157脳S(A锛�
A
锛�2.8584脳S)
G
鈥旂悊璁洪噸閲�
kg
锛忕背
S
鈥斿鍘�
mm
鈥旇竟瀹�
濡傦紝
A=12mm
锛�
S=1mm
G=0.332kg
姣忕背鐞嗚閲嶉噺璁＄畻鍏紡锛� G=0.0157脳S(A锛婣锛�2.8584脳S) G鈥旂悊璁洪噸閲� kg锛忕背 S鈥斿鍘歮m A鈥旇竟瀹絤m 濡傦紝A=12mm锛孲=1mm锛孏=0.332kg
