久磁动圈式仪器
permanent-magnet moving-coil in-strument
久磁动铁式仪器
permanent-magnet moving-iron instrument
久磁聚焦
permanent-magnet focusing
久磁性扬声器
permanent-magnet speaker
久磁中心化
permanent-magnet centering
静电复印材料
electrophotographic material; electrophotographic materials; xerographic material
聚变材料
fusionable material
绝热材料
heat insulating material; heat insulator; thermal insulating material
绝热及耐火材料
heat insulation and refractory material
绝缘材料
insulation material
绝缘耐火材料
insulating refractories
均匀材料
homogeneous material
均质材料
homogeneous material
抗磨材料
antifriction material
抗蚀材料
corrosion resistant material
颗粒复合材料
particulate composite
可变形磁性记忆材料
deformable magnetic material with memory
可变形电介质记忆材料
deformable dielectric material with memory
可裂材料
fissionable mateial
可消耗材料
expendable material