“perforations”簡單造句，perforations造句子

Close inspection shows that they are wearing masks with tiny perforations around the eye and nose area for seeing and breathing.

Squeeze cementing operations may be performed to repair poor primary cement jobs, isolate perforations or repair damaged casing or liner.

The sides of the boxes are clad inblack and coffee colored metal panels textured with perforations patterned after the local Henan wild rose.

Abrasion Marks: Scratches on film caused by dirt, improper handling, grit, emulsion pile-ups, and certain types of film damage (e. g., torn perforations).

This paper elaborates on the method of tapping the remaining oil through perforations adding to improve the injection-production relationship.

The positions of darts, pockets and buttonholes are usually printed but may be marked with small holes and the latter are sometimes marked with square perforations.

The style, with round perforations intended to flush water from the shoe, was invented precisely for the slosh.

Any tape puncher that automatically transforms encoded electrical signals into perforations on paper tape.