21.1中说 After the test, the appliance shall show no damage that could impair compliance with this standard and compliance with 8.1, 15.1 and clause 29 shall not be impaired. 前面半句话说测试过后样品还要满足本标准中的要求, 不知道这个本标准是指整个335-1的所有要求,还是什么要求?如果说是整个335-1的所有要求,那后面说compliance with 8.1, 15.1 and clause 29 shall not be impaired不是多余的吗?