大家在查：阴阳交祛瘀生新河道管理旅游资源开发规划蛋白质细胞翎管饭甑舌痹果乳闪突起

孔通

孔通

孔通

1

The top riser vent with big mesh size has excellent ventilation . It also effectively guard against flies.

上方大网目透气网孔，通透气佳，即可有效预防苍蝇入侵。

2

Ultrasonic attenuation properties of porous and cellular Al alloy foam with spherical pore

球形孔通孔和闭孔泡沫铝合金的超声衰减性能

3

fluted tube fluted wooden stem frost glass tube

孔通带凹槽木头灯身喷砂玻璃管

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