60海里规则 | 60hǎi lǐ guī zé | 60 M formula / foot of the continental slope plus 60 M formula / distance formula; | |
60海里公式 | 60hǎi lǐ gōng shì | 60 M formula / foot of the continental slope plus 60 M formula / distance formula; | |
大陆坡脚加60海里公式 | 60 M formula / foot of the continental slope plus 60 M formula / distance formula; |