【电】 contact gap
contact; contiguity; get in touch with; meet; osculate; osculation; tangency
touch
【医】 c.; contact; contiguity; hapt-; hapto-; per contiguum; taction; tactus
touch
contline; gap; interspace; interstice; interval; lacuna; space; spacing; void
【化】 clearance; gap; spacing; void