All cases were diagnosed as BH4 deficiency by analysis of urinary pterins profile, BH4 loading test, and determination of dihydropteridine reductase in RBC.

For example, in the separations of purines, pyrimidines and pterins to these compounds on MSP, hydrogen-bonding interaction played leading roles besides hydrophobic interaction.

例如，在厚朴酚键合硅胶固定相（MSP）中分离嘌呤、嘧啶及蝶呤时，除了疏水性作用外，氢键作用还发挥着重要作用。

A Study on the Fluorescence Properties of Pterins

蝶呤类化合物的荧光性能研究

It is an ancient burial-mound.

这是一座古代的坟墩.

All great persuaders and salesmen are the same.

所有出色的说客和推销员都是一样的。

Whenever I went out, I heard all sides cordial salutations, and was welcomed with friendly smiles.

我不管什么时候出去, 都能从四面八方听到热诚的招呼, 受到友好微笑的欢迎.

My last salutations are to them who knew me imperfect and loved me.

我最后的祝福是要给那些人----他们知道我不完美却还爱着我.

Charlotte A . Cavatica : Salutations, Wilbur.

夏洛特: 你好啊, 威伯.

Answer restaurant phone within 3 rings, using correct salutations and telephone etiquette.

遵照正确的电话礼仪在电话铃响3声之内接起电话.

There was an impressive exchange of salutations.

他们庄严地互相行礼.

By comparing the performance of two prototypes, it was discussed how the load current and output voltage of front stage ( input voltage of back stage) influence on the efficiency of DC/ AC inverter, then the basis for the circuit optimization was obtained.

通过两台原理样机的性能比较，讨论了负载电流、前级输出电压（后级输入电压）对逆变器效率的影响，为优化设计电路提供了依据。

In circuit design of linear potentiometer, owing to the influence of input and output impedance for front and back stage circuits, and its absurd installation, linear potentiometer will cause nonlinear response. It makes to fall short of precision of circuits and control system.

在线性电位器的电路设计中、电路前后级的输出和输入阻抗的影响以及使用与安装不当都可能引入非线性，造成电路和控制系统的精度达不到要求。

Once on the stage, she can leave behind at the back stage all pains from her ailment and her sorrows.

只消在台上，她把病痛和悲伤的外衣脱下，挂在后台。

Analog front-end circuit consists of preamplifier, low pass filter circuit and back stage amplifier circuit, preamplifier circuit instrumentation amplifier is used because it has a high input impedance, high common mode rejection ratio ( CMRR), low noise, and low drift.

模拟前端电路由前置放大电路、高低通滤波电路和后级放大电路组成，前置放大电路用的是仪表放大器，因为它有高输入阻抗、高共模抑制比（CMRR）、低噪声、低漂移。

The back stage control center is mainly for audience device interactive control at beginning and process of the concert by the organizers, including the relay layout debugging before the start of the concert and other functions.

舞台后台控制中心主要为演唱会主办单位在演唱会开始和进行过程中，对场馆观众终端进行实施互动控制，包括演唱会开始前的中继布局调试等功能。

But just when other artists started walking along the star corridor in the rain, I was told that I could go to the back stage to have my interview of Anita Mui.

然而，就在众多明星开始在雨中踏上星光大道时，我被告知可以到后台对梅艳芳进行采访。

You look fantastic.Thank you, so do you. I just said that back stage, that's sweet.thank you

你看起来好极了多谢你也是我刚在后台还说了呢你真好

Realized the back stage management and the front stage operation of the system.

探讨了前台浏览器界面与后台数据库的信息连接，实现了管理信息系统的后台管理系统功能和前台操作系统功能。

The front stage is an interleaved full-bridge LLC resonant circuit, the back stage is the full-bridge inverter circuit.

本文研究了一种两级结构的逆变器，前级为交错并联全桥LLC谐振电路，后级为全桥逆变电路。

Then we talked about the ordinary framework, the deployment of key technology, such as the DB2 database run in the back stage, the websphere, etc.

并使用后一架构来付诸实施，对其关键性部分进行了阐述：后台的DB2数据库，Websphere等；

I have been performing for most of my life, so I have had a lot of experience working with back-stage crews, but this was my first time actually being in charge of back stage.

演出对我来说是轻车熟路，所以和后台人员一块儿工作，我可是很有经验的。但这毕竟是我第一次实实在在地负责后台工作。