The dual-reflex bandpass, due to the fact that its ports control cone motion over a wider range of frequencies, produces the least distortion and exhibits the best power-handling characteristics.
This paper takes Xichou cone karst area as an example to discuss the characteristics of ecological environment in karst area of southeastern Yunnan.
本文以云南省西畴石灰岩峰丛地区为例探讨了滇东南喀斯特生态环境的特点；
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The governing equations of dynamic pressure distribution, i. e. dynamic cone Reynolds equations are derived. The calculating models of dynamic characteristics of cone plain bearing are given.