对于热兵器方兴未艾的明朝末期来说,谁拥有了先进的火器,无疑就是拥有了决定战争胜败的不二法宝。有徐光启等精通西学的科技人才,明王朝不仅改良了大炮的铸造技术,还引进了炮规、铳尺等先进仪器,使击出的炮火又准又狠。徐光启的学生孙元化,于崇祯 For the late Ming dynasty, where hot weapons are in the ascendant, whoever owns an advanced firearms will undoubtedly have the magic weapon to determine victory or defeat in the war. There Xu Guangqi and other Western science and technology proficiency, the Ming dynasty not only improved the cannon casting technology, but also the introduction of gun gauge, ruler and other advanced equipment, so that the artillery fired and prospective. Xu Guangqi students Sun Yuanhua, in Chongzhen