effective diameter of bolt or high-strength bolt  螺栓

Fastening Bolt， Binding Bolt  紧固螺栓

reamer bolt [= rimer bolt]  绞孔螺栓; 打入螺栓

taper bolt [= tapered bolt]  锥形螺栓; 推拔螺栓

anti-upset device  抗倾覆机构

be upset  不是味儿

Bit-upset rate  非线性力因子; 位翻转概率

casing internal upset  套管千斤顶

center upset forging  中部锻粗锻件

clamp upset  弯夹板

cross-section orbital upset rate  轨道翻转率

current-on upset  有电顶锻

die-upset magnets  热变形磁体

Double-end upset forging  双端锻粗

drill pipe upset  钻杆加厚

Eccentric upset forging  偏心锻粗

Electri upset forging machine  电镦机

Electri upset forging technology  电镦工艺

Electric Upset  电镦