This ship is built of steel , double propellers , double rudders , raked stem , transom stern , two longitudinally continuous decks and four - storey deckhouse with the engineroom located in midship , driven by diesel engines 本船原为钢质双桨双舵,倾斜首柱方尾,有两层纵通甲板和四层甲板室,机舱位于中部的柴油机客货船。
This vessel is a fast fishery management ship made of steel , round bilge , single continuous deck , longitudinal framing , all - welded structure , double propellers and double rudders , c w certain weapon executing the fishery management and supervision along guangdong coasts . main engine model kta38 - m 本船主船体为钢质,圆舭单层连续甲板纵骨架式焊接结构甲板室为中后机双桨双舵小型高速艇型的高速渔政海监管理公务船,用于广东省沿海执行渔政海监管理任务,配备一定的武备。
Those of multi - span , middle - length ( about 25 - 40 metres ) are of large percentage among advanced bridges . simply - supported girder bridges with continuous decks are inferior to those of continuous girders because their decks crack easily . owing to the complex construction of continuous girder bridges , which is laboursome and time - consuming , people have been thinking about an approach to combining the advantages of the two so as to speed up the building and reduce the work procedures 在高等级公路桥梁中,多孔中等跨径(跨径在25 40米左右)的桥梁占很大的比重,桥面连续的简支梁结构体系由于存在桥面容易开裂等缺点而在与连续梁结构体系的竞争中常常处于下风。