The material was prepared by assembling polymer micro-particles with PU foam material in geometry cavum.

以聚氨酯泡沫组装不同高分子微粒制备出一种新型高分子微粒吸声材料。

When it bucks, the buckling of model is different from other shells because it is constrained by the cavum.

当薄的衬壳发生屈曲时，由于壳体受到空腔壁的约束，因此它的屈曲行为与一般的壳体屈曲问题不一样。

The axial cavum measurement device was used to simulate the input impedance of the body antenna based on the theory of long line.

本文基于长线理论用同轴线测量装置模拟弹体天线的输入阻抗值，使引信在同轴线测量装置中其工作状态和自由空间一样。

Based on the established kinematic model, the principle of the key pole length is proposed to avoid the cavum phenomena in the measurement range.

在所建立的运动学基础上，提出关键杆长的设计原则，以避免测量空间内出现“空腔”现象。

The formation of necrosis cavum and glial scar after spinal cord injured was one of important factor that affected regeneration of nerve fiber and neuron.

脊髓损伤后所形成的坏死空洞和反应性增生的胶质瘢痕是导致脊髓损伤再生修复受阻的重要因素。