UC知道请问 ladder spreader 是什么东西
来源：百度知道 编辑：UC知道 时间：2024/07/07 23:51:13
可以再讲的详细点吗，我追加了20分，谢谢啦
这是上下文：
Prior to using a step ladder, the following is to be checked:
the ladder spreader is not damaged or missing and the locking mechanism is operable;
the ladder spreader has not been replaced with rope or chain;
这是上下文：
Prior to using a step ladder, the following is to be checked:
the ladder spreader is not damaged or missing and the locking mechanism is operable;
the ladder spreader has not been replaced with rope or chain;
别瞎说了各位！
ladder spreader的意思是梯子中间的连接部分（A字形梯子有两个梯子连在一起，中间A的横杠部分就是ladder spreader)
http://www.freepatentsonline.com/6986405-0-large.jpg
如图中18号部分
Prior to using a step ladder, the following is to be checked:
the ladder spreader is not damaged or missing and the locking mechanism is operable;
the ladder spreader has not been replaced with rope or chain;
在使用之前的一个步骤梯子，以下是有关方面进行检查：
阶梯摊铺机是不被损坏或遗失的，并锁定机制可操作性;
阶梯摊铺并没有被替换钢丝绳或链条;
是可伸缩梯
阶梯吊具,相当于吊蓝