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First, you should place the Class D amplifier close to the speaker. In the case of stereo applications, you should use two monophonic amplifiers rather than a single stereo chip, so that you can place the two amplifiers next to the two speakers, usually at the sides of the handset.

首先，您应将D级音频放大器放在接近扬声器的位置，在采用立体声效果的时候，您应使用两个单声道音频放大器而非一个单独的立体声放大器，以便您可将两台音频放大器分别放在挨近两个扬声器的位置，通常是放在手机两侧。

The reconstruction problem is ill-posed, so two optimal criterions, the least module and the smoothness criterion base on Tikhonov regularization technique, are introduced into reconstruction algorithm. Many regularization parameters choice strategies are investigated, and the TPA(Two—Parameter Algorithm) strategy which is based on the Morozov discrepancy principles, is implemented in two regularization reconstruction algorithms.Numerical experiment results show that the nonnegative and smoothness constraint condition can overcome the difficulty of iteration semiconvergent, preconditioned technique can improve convergence rate and reconstruction accuracy, smoothness regularization criterion can meliorate ill-posed problem of reconstruction and enhance iteration stability, and the TPA is an effective strategy of regularization parameters choice.

数值试验表明：在共轭梯度法中引入非负约束和光滑约束改善了迭代的"半收敛"性，非负约束保证了解的非负性，光滑约束抑制了重建解的振荡现象，约束算法的重建精度与无约束算法相比大幅度提高；在约束共轭梯度重建算法中引入预优技术，可以加快算法的收敛速度，提高迭代的稳定性和重建精度；引入光滑准则的正则化技术可以有效改善图像重建问题的不适定性，加快迭代的收敛速度，提高迭代的稳定性和图像重建质量，计算正则参数的TPA算法在闪光照相图像重建中是有效的。

We herein report two cases of goats with sexual deformity.They had two systems of reproductive organs and the karyotype analysis showed mosaicism for their sex chromosomes,i.e.,60,XX / XY.The proportion of XX cell line was 42% and 54%,while XY cell line was 58% and 46%,respectively,in the two abnormal goats.

本文报道2例两性畸形的山羊，它们均具雌雄两套生殖器官，染色体组型分析显示它们均为性染色体嵌合体，核型为60，XX/XY，两头畸形山羊的XX细胞系的比例分别为42%和54%，XY细胞系的比例分别为58%和46%。

Methods Forty-two patients with acute critical diseases were stochastically divided into two groups, namely, the treatment group and the control; both groups were treated with routine integrated method, while the treatment group was treated additionally with rhubarb powder nasally or orally; detection was made on the hemorhcological indexes of the two groups before and after the 7 days' treatment.

42例急危重症患者随机分为2组，治疗组和对照组均接受常规治疗和病因治疗，治疗组加用大黄鼻饲或口服，分别检测2组患者治疗前和治疗7d后血液流变学各项指标的变化。

There are two little stars That play bo-peep With two little fish Far down in the deep; And two little frogs Cry "Neap, neap, neap;" I see a dear baby That should be asleep.

有两颗小星星，他们玩躲猫猫和两条小鱼儿远在深海里；两只小青蛙，叫着："小潮，小潮，小潮；"我看见一个亲爱的宝贝他该睡觉了。

According to the above study results, especially the steady operation of two-sludge system（2A/O+N 2SBR）, it can be proved that denitrification and excess phosphorus uptake are relatively independent and intersectant biological processes. The overlap is that denitrifying phosphorus removing bacteriawhich possesses the two bacterial metabolisms, could utilize nitrate as an electron acceptor for phosphorus uptake. The two-sludge system can not only combined biological phosphorus removal and denitrification processes to form a process in practical wastwater treatment , but also solved the main difficulties of current single-sludge systems:①the sludge age competition between phosphorus removing bacteria and nitrifier;② the substrate competition between denitrification and dephosphatation.

以上的研究结果，尤其是时间序列的双泥生物反硝化除磷脱氮系统工艺（2A/O+N 2SBR法）的稳定运行，不仅证明了生物脱氮与生物除磷是两个既相对独立又相互交叉的生理过程，其交叉点是同时拥有硝酸盐还原性和超量吸磷这两种生化特性的细菌进行的反硝化吸磷脱氮生化反应，而且双泥系统工艺克服了常规单泥生物脱氮除磷工艺的两大问题（①聚磷菌和硝化菌的SRT相互干扰；②反硝化与生物除磷竞争VFA），同时保证了脱氮和除磷效果，排水指标达到污水综合排水标准（GB8978-1996）的一级标准，具有实际工程使用价值。

Within the hippocampus, genes encoding two neural signaling chemicals, the neuropeptides Grp and Nmb, are expressed in two distinct areas, suggesting functional differences between the two parts.

在海马区，基因编码了两种神经信号化学传导物质，即神经肽Grp 和 Nmb，他们在两个不同的区域里表达，并显示了不同的功能。

Non-breaking space : A non-breaking space between two words prevents these two words being separated over two lines.

不间断空格：两个词之间的一个不间断空格防止这两个词在行尾断开。

On the basis of Venigalla\'s work,we adopted two path-based algorithms, namely,gradient projection algorithm and disaggregated simplicial decomposition algorithm to solve nonadditive path cost traffic assignment problem under different engine operating modes.We compared the above two algorithms in a network example which showed that compared with the traditional Frank-Wolfe algorithm, the two path-based algorithms had a more quicker convergency while getting optimal solution,and it can obtain a satisfying solution in most cases.

2在Venigalla等人研究工作的基础上，分别采用基于路径的梯度投影算法(gradient projection，GP)和基于路径的非集计的单纯分解算法(disaggregated simplicial decomposition，DSD)来求解考虑不同发动机启动模式下，具有非可加路径费用的交通分配问题，在实例计算中比较了这两种算法的计算性能。

This paper also establishes two basic or extreme forms and a medium structural form of the supply chain by reviewing the relative literatures. It is pointed out that the complete integrated supply chain, one of the two basic forms, is noneffective, while the potential efficiency of the complete competing market or network, the another one of the two basic forms, is usually unavailable.

接着，本文确立了供应链结构的两种基本范式和中间范式，并指出，作为基本范式之一的完全一体化的供应链是无效的，而另一个基本范式—完全竞争的市场和网络范式的有效性一般不易获得，只有介于两种基本范式之间的半一体化的供应链其效率水平是可以接受的，从而也是最常见的。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。