催化剂: catalyst; catalytic agent真实: true; real; authentic密度: density; thickness软化剂真实度: pvc-weichmacherechtheit pvc plasticizer fastness pvc催化剂的密度: density of catalyst催化剂堆密度: catalyst bulk de ity; catalyst bulk density催化剂的氦密度: helium density of catalyst催化剂堆积密度: catalyst bulk density催化剂骨架密度: catalyst skeletal de ity; catalyst skeletal density催化剂之堆密度: catalyst bulk density加压下催化剂密度: catalyst density under pressure捣实密度: packing density; rammed density; stamped density夯实密度: compacted density填实密度: packing density现实密度: real density压实密度: compacted density摇实密度: tap density震实密度: tap density震实密度杯: tap density cup振实密度: tap density催化剂在紧密态下的密度: compacted density of catalyst振动压实密度: vibrating compaction density催化剂: catalytic agent; catalyzer; catalysator; catalyzator; catalyst混合料压实密度: mix packing density振实密度的测定: metallic powders determination of tap density