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sound emission
auto. 噪声发射排放
environ. 放声
tech. 声发射
sound emission Diffusion into the environment of a sound emitted from a given source
environ. 声发射 (从指定环境发出的声音:扩散到的另外的环境。)
sound emission
: 8 phrases in 3 subjects
Automobiles2
Plastics2
Technology4