Hand bombards and culverins were among the early types. 佚名.神奇的知识之书.
These early cannon, bombards, and mortars were mounted on heavy solid wooden frames and moved with great difficulty from place to place. 威廉·亨利·杜利特.世纪发明.
They were known under the varied names of bombards, serpentines, etc. 佚名.神奇的知识之书.
Being shaped internally and externally like an apothecary's mortar, they were called mortars or bombards. 威廉·亨利·杜利特.世纪发明.
The bombards in the fifteenth century were made so large and heavy, especially in France, that they could not be moved without being taken apart. 威廉·亨利·杜利特.世纪发明.
Louis VI used bombards of great length and power against the Flemish in 1477, while as early as 1401 bronze cannon had been cast in several cities of West Prussia. 佚名.神奇的知识之书.
When the heavy, unwieldy bombards with stone balls were used, artillery was mostly confined to castles, towns, forts, and ships. 威廉·亨利·杜利特.世纪发明.