It is found that the MMM signal has apparent relationship with the damage, and that by the zero value of the MMM signal, the hidden damage in the ferromagnetic component can be detected.

通过试验发现，磁记忆检测信号与构件的损伤状态之间具有明显的相关性，通过检测法向磁场的过零点可以实现对构件早期损伤的检测。

youdao

Mmm-mmm, jump in my car, I wanna ta-ake you home.

嗯，坐上我的车吧，我想送你回家。

youdao

Date and Time Insert timestamps and datelines Format (see specifications for options), font name, size, color alignment, background color, padding, margin Day, Date Month Year HH:MM:SS, Day of the Week -- Month Date, Year DD MMM YYYY, DD MMM YYYY -- Day of the Week YYYY.

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Below is a three month price history chart comparing the stock performance of MMM vs.

FORBES: The New #6 Most Shorted Dow Component: 3M

The long-term outlook for the 3M Company ( MMM) is a bit less positive.

FORBES: The Most Oversold Dow Stocks