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瓶口 píngkǒu
gen. bottleneck; finish
tech. bottle-mouth
瓶口: 73 phrases in 20 subjects
Agriculture2
Aviation1
Biology2
Bowling1
Chemistry4
Dermatology1
Ecology1
Economy2
Electronics3
Engineering geology1
Food industry1
General5
Laboratory equipment1
Latin2
Metallurgy5
Nautical1
Oil / petroleum1
Technology36
Telecommunications1
Textile industry2