列车制动机进行感度试验时有何要求?C15
["\u7b54\uff1a\u81ea\u9600\u51cf\u538b50kPa\uff08\u7f16\u7ec460\u8f86\u53ca\u4ee5\u4e0a\u65f6\u4e3a70kPa\uff09\u5e76\u4fdd\u538b1min\uff0c\u5168\u5217\u8f66\u5fc5\u987b\u53d1\u751f\u5236\u52a8\u4f5c\u7528\uff0c\u5e76\u4e0d\u5f97\u53d1\u751f\u81ea\u7136\u7f13\u89e3\uff0c\u53f8\u673a\u68c0\u67e5\u5236\u52a8\u4e3b\u7ba1\u6f0f\u6cc4\u91cf\uff0c\u6bcf\u5206\u949f\u4e0d\u5f97\u8d85\u8fc720kPa\uff1b\u624b\u67c4\u79fb\u81f3\u8fd0\u8f6c\u4f4d\u540e\uff0c\u5168\u5217\u8f66\u987b\u57281min\u5185\u7f13\u89e3\u5b8c\u6bd5\u3002"]