A triangular sail stretching from the foretopmast head to the jib boom and in small craft to the bowsprit or the bow.
这些功表显示了在主悬顶端安装况下将负载操作离开主悬头滑轮时的数据。
A triangular sail stretching from the foretopmast head to the jib boom and in small craft to the bowsprit or the bow.
这些功表显示了在主悬顶端安装况下将负载操作离开主悬头滑轮时的数据。
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