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надставка n stresses
gen.	加长杆; 喷射管; 后加演化; 末期改进
dril.	连杆; 中心拉杆
forg.	垫环
foundr.	保温帽
oil.proc.	加强板; 加长部分; 延长; 加长; 接缝
tech.	套管; 接长; 添补; 接长处; 补缀物; 补加变异; 垫杯 (锻造); 架子

надставка: 31 phrases in 5 subjects

Drilling	4
General	10
Metallurgy	1
Oilfields	1
Technology	15