The wear characteristics of tapes are scratch mark and crack.

磁带磨损特征为划痕和裂纹。

youdao

The results show that the typical appearance of worn audio heads is scratch mark. The wear mechanism of the heads is mainly micro-cutting.

结果表明，磁头磨损的典型形貌特征为划痕，磨损机理以微切削为主。

youdao

Around the same time, in early 2004, Mark had a similar "itch to scratch" and he started the Spring.NET project.

大约在同一时间，在2004年的早期，Mark经历了相似的“寻找历程”，从而开始了Spring.NET项目的开发。

youdao

The media, meanwhile, will scratch its head and wonder how Mark Zuckerberg ever seemed like such a nice, idealistic kid.

FORBES: Andy Greenberg On IT Security

They have to rip up all the good work of the last 12 months and start again from scratch - and there has to be a huge question mark over whether they can bounce back in those circumstances.

BBC: [an error occurred while processing this directive]

"You sort of scratch your head as a consultant when you hear the manufacturer suggest they curb production, " says Mark Rikess, who runs a dealership training and consultancy in Burbank, Calif.

FORBES: Companies, People, Ideas