500dwt是多少g？
500dwt = 777.5869g
是777.5869g，所以说成778g也没问题——四舍五入的误差在0.5%以内。
反过来，500g是多少dwt？
500g = 321.5075dwt
计算公式: g = dwt × 1.555174
该数值前后的 dwt → g
50 dwt77.7587g
100 dwt155.5174g
150 dwt233.2761g
200 dwt311.0348g
250 dwt388.7935g
300 dwt466.5522g
350 dwt544.3108g
400 dwt622.0695g
450 dwt699.8282g
500 dwt777.5869g
550 dwt855.3456g
600 dwt933.1043g
650 dwt1,010.863g
700 dwt1,088.6217g
750 dwt1,166.3804g
800 dwt1,244.1391g
850 dwt1,321.8978g
900 dwt1,399.6565g
950 dwt1,477.4151g
1,000 dwt1,555.1738g