The noise spectrum induced by single aperture perforation plate has the approximate line spectrum ingredient. The single aperture perforation plate is easy to produce whistling.
单一孔的穿孔板产生的噪声谱具有大致线状谱成份,较容易产生哨声。
参考来源 - 水力空化的声学特性及其应用实验研究Vessel length of A. marina kept constant, and the simple perforation plate in A. marina increased flow rate.
白骨壤导管分子长度没有变化,且穿孔板为单穿孔,单穿孔对提高水流速度等方面更有利。
参考来源 - 红树植物木榄和白骨壤幼苗的解剖学特征对淹水胁迫的响应·2,447,543篇论文数据，部分数据来源于NoteExpress
Results show that the acoustic system of micro perforation plate can effectively reduce discharge noise.
试验表明，微穿孔板吸声结构可有效地降低排气噪声。
The results of this study can offer some perforation plate and acoustic absorbing body design reference materials for the acoustic engineers and architects.
本文的研究结果可为声学工程师及建筑师提供穿孔板和吸声体设计的参考资料。
Results There were 3 types of vessel elements, scalariform vessel, reticulated vessel and pitted vessel, the perforation plates were simple perforation plate.
结果茵陈蒿具有梯纹、网纹和孔纹3种类型的导管，穿孔板类型为单穿孔。
应用推荐