damage by frictionの例文

• They do not last as long as human hair because they can be easily damaged by friction and heat.
• A blister may form when the skin has been damaged by friction or rubbing, heat, cold or chemical exposure.
• Hair follicles can also be damaged by friction from clothing, an insect bite, blockage of the follicle, shaving, or braids too tight and too close to the scalp.
• Yet for reasons of efficiency, Rosenblum learned, the separation is increasingly done with a centrifuge, which, in the opinion of connoisseurs, causes highly volatile flavor compounds to be damaged by friction.
• Gloves protect and comfort hands against cold or heat, damage by friction, abrasion or chemicals, and disease; or in turn to provide a guard for what a bare hand should not touch.