帮忙翻译，拜托拜托

using the microscope of 400 times to observe the 13 secongds cauterized scar.
论文中一般写摘要为 microscope of 400 times are used to observe the 13 secongds cauterized scar.

Microscope using 400 times the corrosion time of 13 seconds to observe the scars

observe the cut corrupted by 13 seconds with a microscope which can mangnify the substances by 400 times.

use microscope by 400 times to observe the scar which have been corrupted for 13 seconds
绝对专业翻译，顶楼是用机器翻的，语序不对啊

Observe the scar, which has been corroded for 13 seconds, with a microscope at the magnification of 400.