He found that the length of time it takes a sound's echo to decay is determined by the absorption of the sound's original energy by surrounding material.
他发现，声音回声衰减的时间长短取决于周围物质对声音原始能量的吸收。
The chain length distribution of a oligomeric polystyrene sample initiated by n-butyl lithium was determined by high performance size exclusion chromatography on a ultraviolet absorption detector.
用高效尺寸排除色谱以紫外吸收光度计寿检测器，测定了一个以正丁基锂引发的聚苯乙烯齐聚物的链长分布。
It includes mass absorption of element itself, between elements and element at original X-ray wave length.
它包括元素本身、元素间和元素对某波长的质量吸收。
Based on the sound absorption mechanism of Helmholtz Resonator, the advantage of soft tube length is fully used in the new structure, and thus the low-frequency noise can be controled easily.
提出了一种新型的宽频带共振吸声结构，该结构基于赫姆霍兹共振吸声机理，并充分利用了软管在长度上的优势，易于实现对低频噪声的控制。
The results show that, there is no absorption on the top 20% of the length of vertical tube, where the solution is just cooled by cooling water.
结果表明，吸收器垂直管的顶部在2 0 %的长度内不存在吸收过程，溶液仅进行冷却降温；
The content of KY 405 SBS plastic in which other compositions exist is determined by UV double wave length equivalent absorption point.
采用紫外分光光度双波长等吸收点法对SBS塑料中的抗氧剂KY - 40 5含量进行了分析。
With the increase of oil length, water absorption of the film reduces, while electrical strength increases, but water-dispersible was bad, the ideal oil length was 37%;
桐油改性水性醇酸树脂油度增大，漆膜的吸水率降低，电气强度增大，但树脂的水溶性变差，理想油度为37%；
With the increase of oil length, water absorption of the film reduces, while electrical strength increases, but water-dispersible was bad, the ideal oil length was 37%;
桐油改性水性醇酸树脂油度增大，漆膜的吸水率降低，电气强度增大，但树脂的水溶性变差，理想油度为37%；
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