...结构产品相比: Compared with the product of the existing technique structure 它主要特点是: which is characterized in that 本实用新型同现有技术相比: Compared with the prior art ..
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The utility model discloses a profile, which is characterized in that the profile is composed of three edges with lambdoidal cross section.
本实用新型公开了一种型材，其特征是由断面为人字形状的三个边组成。
The piercing perlite sound absorbing board comprises a perlite board, which is characterized in that a sag is arranged on the perlite board.
该穿孔珍珠岩吸声板包括珍珠岩板，其特征在于，所述珍珠岩板上设有凹陷。
The invention improves an aeration rotary brush for water treatment, which is characterized in that a rotary brush blade is of a curve arc shape.
本发明是对水处理用曝气转刷的改进，其特征是转刷叶片呈弯曲弧形。
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