The Harvard group use positron emission tomography ( PET ) scans to monitor the brain activity.

You can read more about Positron by viewing the Positron Company Profile.

正电子信息您可以通过查看阅读更多关于正电子正电子公司简介.

Positron emission tomography ( PET ) is an imaging technique that combines a radioactive tracer with a molecule.

正电子发射断层成像 ( PET ) 是一种结合单一分子放射示踪的成像技术.

Molecular imaging with positron emission tomography ( PET ) is an important field of molecular imaging.

正电子发射断层 ( PET ) 分子影像学是分子影像学的重要内容.

Studies of electrophysiological positron emission tomography and patients have provided important evidence supporting this viewpoint.

电生理研究、成像研究以及病人研究都为这一观点提供了可靠的证据.

These new tests are resonance imaging ( MRI ) and positron emission tomography ( PET ) scanning of the heart.

这两个检查项目分别称为核磁共振 ( MRI ) 和正电子发射断层显像 ( PET ) .

How few cancer cells can be detected positron emission tomography?

正电子发射断层摄影怎样探测少量癌症细胞?

Positron emission tomography ( PET ) is a non-invasive method to detect the distribution of radionuclide in vivo.

正电子 发射体层摄影术是一种无创性的探测生理性放射性核素在机体内分布的断层显像技术.

One theory posits that everyone carries an ongoing stress burden that accumulates throughout life.

有一学说认为,每个人都承担着在一生中不断累积的应激负荷.

Q . Why does using parenthesis in a POSIX regular expression change the result of a match?

在POSIX正则表达式中使用括号为什么会改变匹配结果?

Most POSIX systems, such like Linux, provide a faster but non-reentrant implementation of synchronization primitives.

多数POSIX系统, 例如Linux, 提供了更快但是不可重入的同步原语.

The system is implemented in ANSI C, according with POSIX specification.

系统的实现利用标准C开发, 基本符合POSIX规范,平台相关代码在源代码中用编译选项隔开.

Q . Why does using parenthesis in a POSIX regular expression change the result a match?

POSIX正则表达式中使用括号为什么会改变匹配结果?

In this world freedom, selfdetermination, and moral choice are real and poss ible.

在这个世界里,自由, 自我决定和道德选择都是真实的、可能的.

Please send a photo if poss.

如果可能的话请寄张照片来。

The thermogravimeric analysis ( TGA ) shows POSS has good thermal stability.

结构及TGA分析结果表明,所合成的POSS是一个含有不规整立体结构的混合物,在高温下具有较高的质量保持率.

I need them back as soon as poss.

我要他们尽快回来。

I'll be there if poss .

如果可能我会去那里的。

La Chine poss è de les succ è s formidables mais cela ne repr é sente pas qu'elle poss è de le bon futur.

拥有如此成就的中国却令人惊异地有着一个并不甚光明的未来.

L'amour avait poss é par l à, as somebody puts it.

好象谁说的:爱情已在那儿经历过了.

We'll rush it round today if poss.

如果可能，我们今天想把它做完。