"There's a nut on the inside of the oil pan. The bolt came out. But the nut was not welded corectly to the oil pan,so the nut fell off.

VOA: standard.2010.08.01

Cells of the epithelium are actually "welded" to one another through these junctions called tight junctions.

上皮细胞通过称为紧密连接的胞间连接,"焊接"在一起

耶鲁公开课 - 生物医学工程探索课程节选

Cells of the epithelium are actually "welded" to one another through these junctions called tight junctions.

上皮细胞通过称为紧密连接的胞间连接,"焊接"在一起

耶鲁公开课 - 生物医学工程探索课程节选