The targeted examinations present a child's learning outcome at a certain stage. Therefore, related to the results, the problems found in these tests should be valued by parents.
针对性的考试代表着孩子在一定阶段的学习成果，因此与结果有关，在测试中发现发现的问题才应该被家长重视。
It provided for the train traffic order and ensured traffic safety. At present, the signal design of train control system needs continuous field tests to be improved.
目前列控系统的信号工程设计需要通过不断的现场试验进行完善，这样做的结果是会消耗大量人力和物力。
It provided for the train traffic order and ensured traffic safety. At present, the signal design of train control system needs continuous field tests to be improved.
目前列控系统的信号工程设计需要通过不断的现场试验进行完善，这样做的结果是会消耗大量人力和物力。
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