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His serious expression and the red tinted lighting made his face look gaunt.

他的严重表达和红色的有色照明使他的脸看憔悴。

The principle of defocus detection by critical angle method is introduced and the expression of defocus is deduced with Gauss optical formula based on Fresnel formula and a reasonable hypothesis.

介绍了临界角法离焦检测的基本原理，通过合理假设，利用菲涅尔公式和高斯光学公式得到了离焦误差信号的计算公式。

LU decomposition is essentially a Gaussian elimination method expression.

详细说明： LU分解在本质上是高斯消元法的一种表达形式。

In this paper, by using the method of expanding the hard-edge aperture function into a finite sum of complex Gaussian functions, the recurrence propagation expression for the propagation of partially coherent beams through a multiple apertured ABCD optical system is derived, which provides a fast algorithm for simulating the propagation of partially coherent beams through hard-aperture optics.

用有限个复高斯函数之和来逼近硬边光阑窗函数的方法，推导出了部分相干光通过多个硬边光阑ABCD光学系统传输的递推公式，提供了一种模拟部分相干光通过硬边光学系统传输的快速算法。

Take this Mademoiselle Gautier. Seems she'd been around a bit, if you'll pardon the expression .

就说这位戈蒂埃小姐，好像她生活有点儿放荡，请原谅我用了这个词。

Packaged within geminate particles, the genomes of geminiviruses are single-stranded circular DNAs that are replicated mainly by a rolling circle mechanism, characteristic to prokaryotes. Previous researches have indicated that geminiviruses can generate various DNA replication forms in bacteria, suggesting that geminiviruses possess the potential to regulate the expression of certain viral genes in prokaryotic systems.

双生病毒在植物细胞中是主要以原核生物形式的rolling circle replication方式做复制，而先前研究指出双生病毒可以在原核系统里进行复制，因此，双生病毒基因体中应具有在原核系统中亦能表现的调控机制，除了已知的基因外，是否有其他未知的基因参与这项机制仍不清楚。

HMW-GS1Dx5 gene specific expression in different times during wheat gemination was studied dy RNA dot blotmethods using HMW-GS1Dx5 gene probe.

利用小麦高分子量谷蛋白1D×5亚基探针，研究HMW-GS1D×5基因表达的规律。

We analyze low-dimension topology, present an general algebra expression of cubelike recursive interconnected function. All of these works provide a new method of studying cubelike recursive networks.

2分析研究了低维立方形递归网络的拓扑类型，给出了立方形递归网络互连函数代数表达式，为研究立方形递(来源：ABC论文d2网www.abclunwen.com)归网络给出了新方法。

This paper will deduce a group of new equations from general gas flow equation and Colebrook-White friction factor expression.

将气体流动基本方程与Colebrook White 摩擦阻力公式相结合推导出新的公式，大大简化了气体流动基本方程原来需要多次试算、迭代的计算过程，并且推导过程未加任何假设。

Systematic well test, or steady-state well test, is one of important methods by which the open flow capacity of a gas well and the general expression of gas well deliverability equation are determined.

系统试井是确定气井产能方程、无阻流量等的重要方法之一。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。