14.Port Construction

Aharborisanyplacethatprovidesseagoingshipsorboatsofanykindwithameasureofprotectionfromthewindandwaves.Tofulfillthisrole,aharbormustbedeepenoughtoaccommodatethelargestshipsthatmayuseit,andhaveabottomthatwillholdthematanchor.Aportisaharborwithfacilitiesfort ......     (本文共 6042 字 )     [阅读本文]>>




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