adj.没有扎实基础的；没有理由的；虚假的
He explained his abscent with an ungrounded excuse. 他找了个站不住脚的理由来解释缺席的原因。
If ungrounded, go for a walk or swim. 如果没有根植，出去散步或游泳。
Other features are the same as the unground type. 其它特点同绝缘型。
Three-phase winding, zigzag connection, ungrounded or grounded. 三相绕组, 之字连接, 接地或不接地。
Why are ungrounded “Indigo Children” such a problem? 为什么靛蓝孩子有不接地这个问题？
