JQuery使用.find来禁用Radio输入元素

Through the HTML shown below I am trying to disable the two sRadio1 inputs or the two sRadio2 inputs if any of them are checked, so I tried using JQuery to do so as shown below but for some reason it is not working. Can someone please tell me what exactly I am doing wrong here and how to fix it? ThanksThrough the HTML shown below I am trying to dis