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chem. material seal
met. charge seal
tech. material lock
料封
: 380 phrases in 35 subjects
Animal husbandry1
Architecture6
Automobiles21
Aviation2
Chemistry13
Compressors6
Dentistry1
Dermatology1
Drilling3
Economy1
Electric machinery1
Electronics38
Engineering geology3
Environment1
Exhibitions2
Footwear1
General3
Hydroelectric power stations5
Industry2
Information technology2
Metallurgy18
Nautical1
Nuclear and fusion power1
Nuclear physics3
Nursing1
Oil / petroleum13
Oil processing plants1
Plastic surgery2
Plastics14
Polymers1
Space4
Sports1
Technology203
Telecommunications3
Wind Energy1