反映新拌混凝土中砂浆的体积与粗骨料紧密堆积时产生的空隙体积的比值；
One is Q, the ratio of voids content of coarse aggregates to the volume of mortar.
这些关键特征包括细胞体积、细胞形状、染色质分布、核内空隙以及核浆体积比值。
These features include cell volume, cell shape, chromatin distribution, intranuclear voids, and the ratio of nuclear to cytoplasmic volume.
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