求翻译：梁式桥优点：采用钢筋混凝土建造的梁桥能就地取材，工业化施工，耐久性好，适应性强，整体式好且美观，这种桥型在设计理论和施工技术上都发展的比较成熟。缺点：结构自身的自重大，约占全部设计荷载的30%至60%，且跨度越大其自重所占的比值更显著增加，大大限制了其跨越能了。是什么意思？

Beam bridge advantages: the construction of reinforced concrete beam bridge can make the best of the industrialized construction, durability, adaptability, the overall style is good and beautiful, this bridge type in the design theory and construction techniques have developed more mature. Disadvant

Mr Leung-style bridge with reinforced concrete construction advantages: the bridge construction can be obtained locally, industrialization, and durability, adaptability, and the good and attractive, this bridge type in design theory and construction techniques, all the more mature development. Disad

Beam plate bridge merit: Uses the reinforced concrete construction the beam bridge to be able to make use of local materials, the industrialization construction, the durability is good, compatible, the integral type is good also is artistic, this kind of bridge all develops in the design theory and

Advantages of beam Bridge: constructed of reinforced concrete girder bridge local, industrial construction, good durability, adaptability, overall good and pleasing, this theory of bridge design and construction technology development on more mature. Disadvantages: structures itself since major, abo

正在翻译，请等待...