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。
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Furthermore, we analysis the effect of difference inner-cladding structures on the absorption efficiency of pump light, and the fiber length has a significantly impact on output power.
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.