firnn.粒雪;积雪
firn.枞树;冷杉;枞木
firction drive[机] 磨擦驱动
firing trigger弹射手柄
firing-angle触发角
firing profile烧结温度分布图
firing density射击密集度
firing failure引燃失败
firing vehicle火箭发射装置
firing platform起动台,发射台架
firing accuracy射击精度; 命中率
Firing Schedule烧成制度