ultra-selectiveBNC²³⁶²¹³⁺¹ 例句 Using ultra-selective catheter, the microspheres could be sent to the end vessels of hepatic artery near the cancer and block the blood stream as well as release slowly the drug entrap-ped locally. 通过动脉插管即可将微球栓塞至肝癌邻近的末梢动脉血管，起阻断血流和在局部缓释药物的双重作用。 cnki