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This study investigated the effect of sludge retention time on the removal of high concentrations of organic carbon, nitrogen and phosphate in a bench-scale sequencing batch reactor operating with a three-stage alternating anoxic-oxic sequence and step-feed to treat synthetic wastewater.

本研究利用阶梯进流配合缺氧／厌氧－好氧三阶段交替操作之批式反应器系统（ the step-feed alternating anoxic/anaerobic-oxic sequencing batch reactor， SAOSBR ），处理含高浓度碳、氮、磷之合成废水，并探讨污泥停留时间，对系统硝化、脱硝、除磷特性及处理效能的影响。

This essay deduces the power sum formula of an arbitrary arithmetic progression step by step on the basis of Euler-Maclaurin formula,and then achieres the compute formula of natural number power sum -∑ni=1i m.

前n个自然数的方幂和，∑ni=1im是一个古老的难题。

It teaches you step by step on making a wire wrapped gemstone bangle bracelets.

它教你一步一步作出电线包宝石手镯。

It goes through step by step on how to make simple beaded earrings.

它通过一步一步就如何使简单的串珠耳环。

Many types of optical transmission, and here I step on the weak-guided wave fiber wave equation to study and understand the step-index optical waveguide mode, are second-order differential equations Bessel equation.

光纤传输的种类很多，在这里我只对阶跃型弱导波光纤波动方程进行研究，了解阶跃折射率光纤的波导模式，得到二阶微分方程Bessel方程。

There's a playfulness to these tunes, like the puckish electronic drums on the flamenco-tinged and downright catchy "Notting Hill Two-Step" and the tongue-in-cheek boulevardier pretensions of the closing "Rive Gauche," that suggests a pair of sharp wits behind the well-packaged sheen of this music.

专集曲调充满趣味性，就像是以朋客节奏的电子鼓演奏出弗拉门科式的音调，而就乐曲"Notting Hill Two-Step"和易于随口哼唱乐曲"Rive Gauche"而言，确实体现出这张包装精美的专集的独特之处。

Be joyful,don't be sad,i always told myself that in my childhood,with the thinking of the world is semplice,and purity,i keep step by step on my own way,without hesitating ,just keep on going...to myself

看到同事omi换了msn名字，突然觉得很舒服，好象说出了自己心里面的东西，搞不清楚爱来爱去究竟是

The system is built in the VC++6.0 environment on the basis of PC flat roof, DSP locomotion control card and relevant drivers. Its software design can be reconstructed based on the modularized function block technology, and thus a modularized STEP-NC Milling system is built.

在Visual C++6.0环境下，以PC平台、DSP运动控制卡及相应的驱动器为基础，基于功能块技术的模块化可重构软件设计，建立模块化的STEP-NC铣削数控系统。

When the mobile phase composition on the current step is optimized, the overlapping separation range map for solutes eluted in next one or two steps is replotted simultaneously by considering the influence of elution conditions for current step on the retention of uneluted solutes.

在对当前台阶流动相组成进行优化的同时，考虑其对后面一到两个台阶上流出组分保留的影响，实时地重新绘制对于后面台阶上流出组分的重叠分离区域图。

Based on STEP standard and IDEF method, on the basis of function layer, product information model and its structures with three layers (i. e. function layer, generic part layer, generic structure layer) were built.

基于STEP标准和IDEF产品建模方法，提出了基于功能层的产品信息建模和产品信息模型的三层结构：功能层、广义零件层和广义结构层。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷