However, instead of heating the entire sample, the researchers used a hot atomic force microscope (AFM) tip to convert very narrow ribbons, measuring just 12 nm across, into reduced graphene.

然而，研究人员并非采用加热整个样本的方案，而是使用了原子力显微镜(afm)一个加热探针去转换出一条仅有12纳米宽的导电带。

youdao

Atomic force microscopy generates very high-resolution images (about 5-nanometer resolution) by “feeling” the surface of a sample with a tiny probe tip.

原子力显微镜是运用一种微小的探针去“感受”样本表面，能得到高分辨率的影像（约5纳米的分辨率）。

youdao

But usability tests force you to make assumptions based on a small sample of customers.

但是，可用性测试会驱使你只根据一小部分客户样本来做出假设。

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Out of 3, 250 drivers tested during December in a joint operation across the two force areas, 96 were positive or failed to provide a sample - 2.95%.

BBC: Festive drink-drive figures up in Durham and Cleveland

Since the Crime and Security Act became law last year, police have had powers to force thousands of past offenders across England and Wales to provide a DNA sample in order to help solve serious crimes such as murder, rape and manslaughter dating back up to 40 years.

BBC: A DNA autoradiogram