self-demand英'selfdɪm'ɑːnd美'selfdɪm'ɑːndBNC²³⁶²¹³⁺¹ 基本例句 自我需要¹⁰⁰ Exploring the characteristics of flame spread over the surface of solid combustibles and building the theoretical models of fire spread are the self-demand of fire science development. 而固体可燃物表面火蔓延是森林火灾、建筑火灾以及工业火灾中普遍存在的燃烧现象,是火灾科学研究的一个基础问题。 dictall