I expect to solve some practical questions through the study of taking defencemeasures before the possible infringement.
笔者希望通过对事先采取预防措施造成他人伤害行为的探讨，能够解决一些实践问题。
2
Some methods of the countermeasure against the optical Satellites and the defencemeasures of the Satellites are discussed.
探讨了对光学探测卫星实施干扰时需要解决的问题以及卫星可能采取的防护方法。
3
Therefore, evaluating risk effectively, selecting effective defencemeasures and defending information threats actively are the key points of resolving security problems of information system.