In practice, you should place the certifier under lock and key and may even put a guard (an actual person!) in charge of handing out the key via a very controlled mechanism.
实际上，您应该把证明锁起来再放上警卫(真正的人！)，通过严格控制的机制传递钥匙。
2
Probably, be in charge of releasing the mechanism of data, identifying what need for people is a such Numbers only, not was necessary to release more data.
或许，负责发布数据的机关，认为人们需要的只是这样一个数字，没有必要发布更多数据。
3
The structure and performance of the low detonation velocity and elongated source charge are designed and introduced, and explosive mechanism for the charge is also analyzed in this paper.