Expertise in this field is very thinly spread across the country.
该领域
专门技术在该国没有怎么得到推广。
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In parallel, the lab takes a small cross section of the sample, freezes it, and thinly slices it with a scalpel -- effectively taking a " frozen snapshot, " says Hoving -- and then reviews it under a microscope in a process called a quick section.
同时,实验室会采集样本的一小部分横截
,将其冷冻,然后用手术刀将其
成薄片,霍文说,这实际上是拍摄“冷冻快照”,然后在显微镜下对其进行检查,这个过程称为快速
片。