词汇	举行揭牌仪式
释义	举行揭牌仪式 hold an opening ceremony
随便看	particle organic carbon particle organic material particle organic materialpom particle organism organic fertilizer particle orientation particle orientation process particle-oriented paper particle packing particle packing density Particle padding particle-pair particle pair production particle pair production and annihilation particle parameters particle part particle particle correlation particle-particle interaction particle-particle interaction energy particleparticle packing particle particle packing particle partition particle partition function particle-patch-data particle path particle pathway