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A combination analysis of SIP and in situ microbiological methods was applied on the anaerobic digestion of biomass organics suffering from severe acids inhibition. The studies found that accumulated acids were degraded mainly by Methanosarcina firstly with acetoclastic pathway and then with hydrogenotrophic pathway under mesophilic condition, whereas acids were mainly degraded to methane by the tandem reactions of syntrophic acetate oxidation and hydrogenotrophic methanogenesis under thermophilic condition.

联合应用稳定同位素表征技术和微生态原位表征方法，对高浓度有机酸胁迫条件下的生物质类有机物厌氧发酵甲烷化途径的研究结果表明，面临高浓度有机酸迅速累积的环境，中温发酵条件下，优势菌种为甲烷八叠球菌，依时间次序，通过乙酸发酵和氢营养型途径利用累积的有机酸产生甲烷；而在高温条件下，有机酸则通过乙酸氧化和氢营养型甲烷化途径的串联反应被降解。

According to the definition and the distribution of VSR's voltage space vector, the introduction of a rule-based SVPWM current control strategy, with non-fixed switching frequency and dual hysteresis loops, that obviously improves the performance of current control. Based on two kinds of control strategies of VSR under unbalanced grid condition, the introduction of a new VSR control strategy featuring undamped-oscillation that simplifies the controller structure and effectively improves VSR's performance under unbalanced grid condition. A systematic description of the state switching in trilogic PWM signal generation of threephase CSR by using the conversion between bilogic and trilogic switching functions.

作者在如下工作的基础上对PWM整流器的一些关键问题提出了自己的研究思路、观点和方法：根据PWM整流器网侧矢量关系，直观地描述了其四象限运行的基本原理及特征；定量分析了VSR、CSR的PWM换相过程及波形特征；引入等效变压器模型并详细分析了VSR、CSR基于d—q模型的动、静态特性；提出了满足四象限有功、无功运行指标时的VSR交流侧电感设计方法；并提出了依据控制系统跟随性和抗扰性性能指标设计VSR、CSR直流侧储能元件的参数计算方法；在研究了VSR电流控制策略基础上，提出了影响VSR电流控制的几个要素，并进行了定量分析；根据VSR空间电压矢量的定义及分布，提出了基于规则控制的不定频滞环空间矢量PWM电流控制策略，并由此提出了具有双滞环特性的不定频滞环优化SVPWM电流控制策略，有效地改进了滞环PWM电流控制性能。

Based on two kinds of control strategies of VSR under unbalanced grid condition,the introduction of a new VSR control strategy featuring undamped -oscillation that simplifies the controller structure and effectively improves VSR"s performance under unbalanced grid condition.· A systematic description of the state switching in trilogic PWM signal generation of three-phase CSR by using the conversion between bilogic and trilogic switching functions.· Referenced to the CSR"s trilogic PWM signal generation, an approach to achieve low-stress natural commutation of switching devices by reshuffling the vector composition sequence, resulting reduced switching loss.

在研究了两类电网不平衡时的VSR控制策略基础上，提出了一种新型的基于无阻尼振荡控制器的VSR不平衡控制策略，在简化控制结构的同时，有效地改善了电网不平衡时的VSR控制性能；·通过二、三值逻辑开关函数间的转换，系统地描述了三相CSR三值逻辑PWM信号发生中的状态切换；·结合三相CSR三值逻辑PWM信号发生规律，提出了通过调整矢量合成顺序而使功率管获得自然换相的低电压应力SVPWM控制，从而有效地降低了功率管的开关损耗。

If there were no appropriate Material Condition and Management Condition, the UDS would be in vain.

如果不具备相应的物质条件和管理条件，战略就只能是空谈。

Except for the unallowed condition of law and condition outside,contrator must construct and complete according the contract,and rectify the disfigurement in his work and achieve the satisfactory of the engineer.

除法律或外界条件不允许的情况之外，承包商应严格按合同施工和竣工，并改正工作中的任何缺陷，达到工程师满意的程度。

It derives from the induction-based model checking algorithm, and merges the checking processes of base condition and induction condition using our simplified unsatisfiable core extraction in SAT problem.

提出一种改进的基于时间帧展开的时序电路等价验证算法，其来源于模型检查中的基于数学归纳的验证算法，在使用并简化了SAT问题中不可满足子集提取过程后，将基本条件检查和归纳检查合并处理。

The results indicate: diversion shell can transform the kinetic energy of fluid into pressure energy well, and eliminate the circumferential component of fluid; the inlet incidence angle of vaned diffuser increases at the condition of O.8Q, and it results in flow separation very likely and the hydraulic loss increases; it is nearly non-impact inflow at the condition of 1.2Q, and the velocity distribution is uniform at the inlet of vaned diffuser and flow separation dose not appear.

结果表明：导流壳能很好地将叶轮中流出的流体的动能转化为压能，并消除速度的圆周分量；在0.8Q工况下，空间导叶的进口冲角增大，容易在空间导叶背面产生流动分离，造成水力损失增加；在1.2Q工况下，空间导叶的进口接近无冲击入流，在进口处流速分布较均匀，其内部未发生流动分离现象。

Mulching soil with straw could prevent soil water from vaporing anddecrease soil temperature.The growth of ginger were not different undermulching condition and shading condition,but the ginger growed poor in thenaked field.

生姜采取地面覆草栽培，具有良好保水降温作用，因而地面覆草条件下生姜的长势与传统插草遮光栽培极为接近，但裸地生姜的长势则很差。

The results showed that low temperature, high content of salt and acidic condition inhibited ammonifiers growth, and alkalescent condition showed little effect on ammonifiers. Ammonifying bacteria in Suzhou Creek could not use inorganic nitrogen and carbamide as nitrogen source. Additional carbon source have little effect on ammonifiers growth....

结果表明，低温、高盐度和酸性条件会抑制氨化菌的生长；中、碱性条件下，氨化菌仍能维持正常生长；苏州河的氨化菌无法以无机氮和尿素作为生长所需的氮源；在氮源充足条件下添加额外碳源，对氨化菌的生长无抑制作用；苏州河的环境条件有利于氨化菌的生长。

There is provided a portable radio signal transceiver including an annunciator which annunciates a user that there has been a call, a counter which counts both the number of calls having been made in a predetermined period of time and the number of annunciation made by the annunciator when there is a call, a memory storing therein a predetermined condition for locking a dial, the predetermined condition including the predetermined number N1 of annunciation and the predetermined number N2 of calls, and a controller which causes the portable radio signal transceiver to carry out dial-locking, if the numbers of annunciation and calls counted by the counter are equal to the predetermined numbers N1 and N2, respectively.

一种便携式无线电信号收发信机（100），它包括一个通告用户已来呼叫的通告器，一个计数在预定时间内所作的呼叫数和当来呼叫时由通告器所作的通告数的计数器，一个存储用来锁定拨号的预定条件的存储器（105）预定条件包括预定通告数N2和预定呼叫数N2的存储器，以及一个控制器，如果计数器计数的通告和呼叫数分别等于预定数N1和N2，则控制器使便携式无线电信号收发信机执行拨锁。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐