极速赛车真的有规律吗

简介：Zhu Cixiang took it in his hand and looked at it carefully, thinking that this was the gun tube mentioned by Qi Jiguang in his military training records. The powder tube is used to preload a certain amount of propellant. During combat, the propellant in the tube is poured into the gun chamber to ensure the right amount of gunpowder.