jack rafter造句

例句与造句

1. Only a level roof, or a 0 pitch will require a 45?angle side cut ( cheek cut ) for hip and jack rafters.
2. Among its basic uses are marking common, hip, valley and hip, or valley jack rafters, laying out stair stringers, determining and marking angles, and making square cuts on boards.
3. It's difficult to find jack rafter in a sentence. 用jack rafter造句挺难的