为了在输卵管绝育粘堵剂中,填加一种显影剂使它能够长期显影,首先要研究一下显影原理. 一个物体经过X线照射之后能够形成影象,主要由于物体内的密度和厚度有所不同,吸收X线多少不一.物质的密度愈大,吸收X线愈多,穿透的愈小;相反密度愈小,穿透的愈多.物质的密度取决于组成物 In order to tubal sterilization gel blocking agent, add a developer to make it able to long-term development, we must first study the principle of development.An object after X-ray can form an image, mainly due to the density and thickness of the object Different, absorb X-ray varies somewhat.Material density is greater, the more X-ray absorption, the smaller the penetration; the opposite, the smaller the density, the more penetration.Material density depends on the composition