working platform短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 工作台 All sides of the working platform shall be installed with top guard-rails 900-1150mm height, intermediate guard- rails450-600mm height, toe-boards 200mm height and safe access and egress. 工作台的所有方向都应安装顶端护栏900-1150毫米高，中间护栏450-600毫米高，踢脚板200毫米高和安全进出口。 iciba