二次的

The blast power of TBE was higher due to the enhancement of afterburning to shock wave. The percentage of total energy released in explosive reaction of TBE was about 42% as analysis, which indicated that it had potential to be improved. A modified thermobaric explosive containing chemically active material was studied by experiment.

对含化学活性材料温压药剂M-TBE的实验表明：其冲击波曲线有两个规律的正压作用区；二次冲击波在火球区外形成，火球区内是后续燃烧反应对爆炸波增强而引起的压缩波积累压力平台；二次冲击波峰值压力不小于第一个冲击波的40%，二次冲量占总冲量的12.5%~43.7%，其对爆炸/冲击波威力的贡献不可忽略；化学活性材料对温压药剂的后续燃烧反应有增强作用，有利于二次冲击波的形成和传播。

The fourth part revolves around how to implement the second development of coursebooks, including the change of teaching concept, teacher concept, coursebook concept and coursebook adaption in the course of second development.

第四部分围绕如何实施教材"二次开发"进行系统阐述，包括教师在教材"二次开发"中观念的转变；教材"二次开发"中教材的创改；教材"二次开发"存在的问题和改进建议，为高校的教改探索一条新的途径。

Some conclusions are followed:(1)the reaction ratio of boron is 12% in primary combustion;(2)the degree of agglomeration can be decreased adopting boron coated with AP;(3)the content of oxygen is very important for afterburning efficiency;(4)the afterburning efficiency will be changed with different air-gas ratio;(5)the head distance of after-burning chamber is increasing, the circumfluence in the head of after-burning chamber is stronger and the distribution of fuel backward the after-burning chamber is more well-proportioned.(6)the combustion efficiency of DR will be improved by increasing the area of fuel nozzle.(7)the angle between dual air-inlets have complex influence with the combustion of DR.

通过本项研究，取得如下结论：（1）一次燃烧硼反应比例在12～15％之间；（2）AP包覆硼，可以降低硼结团度，有利于一次燃烧喷射效率的提高，也有利于硼在补燃室进行二次燃烧；（3）进气空气中的氧含量对二次燃烧非常重要；（4）对于一定配方的含硼富燃推进剂，不同的空燃比，二次燃烧效率不同；（5）补燃室头部距离的增加能增强补燃室头部回流以及提高燃料在补燃室后段分布的均匀性；（6）在一定范围内，增加一次燃气喷嘴面积能提高冲压发动机燃料的燃烧效率；（7）进气道夹角对补燃室内燃料的燃烧影响复杂。

Based on above analyses, this paper brings forward a new evaluation index system of High-tech Zone\ re-creation.

在此基础上，提出了高新区二次创业评价指标体系制定原则、高新区二次创业的发展目标和二次创业评价指标体系框架。

In the present work, the compensation mechanism for secondary electron emission has been investigated for the accurate measurements of high-energy proton beam.

根据高能带电粒子在金属表面诱发二次电子发射理论，对高能质子束流强度测量的二次电子补偿原理进行了研究，设计了二次电子补偿结构。

Any secondary winding of transformer shall not be allowed open circuit; otherwise there is a danger of high voltage.

5.5.6.3互感器的任何一个二次绕组均不许开路否则有高压危险，如果某一个二次绕组暂时不使用，则必须将二次接线端子短路。

In order to unsterdand the properties of rebound and recompression, this study carried out oedometer tests for six soft clays with three surcharge ratios to simulate surcharging. Properties analyzed in this thesis include: 1 post–surcharge secant secondary compression index; 2 amended post- surcharge secant secondary compression index in which the time starts from load application; 3 time at which secondary compression reappears; 4 post-surcharge secondary compression strain rate.

为探讨软弱粘土於超载移除后的回胀与再压缩性质，本研究利用传统单向度压密试验仪对六种土样分别进行三种超载比的超载单向度压密试验，并分析所得结果，分析方法包括：1评估后超载割线二次压缩指数；2评估修正后超载割线二次压缩指数，将后超载的时间原点改为由加载起始时起算；3评估二次压缩再现时间与超载比的关系；4评估后超载二次压缩应变速率之特性。

The mainly conclusions in our research are as flowing: tungsten trioxide powders with 100 nm primary particle are obtained by spray drying,calcination and wet milling process, and an average size of quadric particle composed of agglomerated particles is 0.64 μm; tungtsen powders with 39 nm grain size and 60 -100 nm primary particle are produced directly from previous tungsten trioxide using one step reduction in hydrogen at 700℃, and an average size of quadric particle of tungsten powder is 2.91 μm; tungsten trioxide and copper tungstate compound powders with 100 nm - 200 nm primary particle are produced using ammonia metatungsten and copper nitrate as raw materials by spray drying,calcination and wet milling process;the compound powders are transformed completely into tungsten and copper compound powders by reduction in hydrogen at 700℃,in which tungsten grain size is 59 nm and copper grain size is 51 nm; primary particle size of compound powders is 80 - 120 nm,and an average size of agglomerated quadric particle is 1.86 μm; tungsten nitride powders with 35 nm grain size are prepared from tungsten trioxide powders by nitrogen treatment thoroughly in pure ammonia at 650℃, and an average size of agglomerated quadric particle is 0.64 μm in normal temperature.

研究结果表明：采用喷雾干燥—焙烧—球磨工艺可以制备出粒度约为100nm的WO_3粉体，它们在团聚后形成的二次颗粒平均粒度为0.64μm；采用一步直接氢还原方法可在700℃下从上述WO_3粉体制备出晶粒尺寸为39nm的、一次颗粒粒度为60-100nm的W粉体，其二次颗粒的平均粒度为2.91μm；以偏钨酸铵、硝酸铜为原料，采用喷雾干燥—焙烧—球磨工艺可制备出一次粒度为100-200nm的WO_3和CuWO_4混合粉体；采用氢还原工艺可在700℃下将这种粉体完全转变为W、Cu复合粉体，其中W的平均晶粒粒尺寸为59nm，Cu的平均晶粒尺寸为51nm；复合粉体的一次颗粒尺寸为80-120nm，在常温下团聚后形成的二次平均粒度为1.86μm；采用纯氨氮化工艺可以在650℃下由WO_3粉体制得WN，其晶粒尺度为35nm，在常温下团聚后的二次平均粒度为6.4μm。

But it is difficult to measure the displacement of the piston of the variable cylinder because of structure.

为解决二次调节系统的开环不稳定问题和提高控制性能，一般是采用双反馈回路控制系统，需要二次元件输出反馈和二次元件变量控制缸活塞位移反馈。

According to the problems above, this paper analyzes how to design current filter under the situation of Linear Second-Side Power System and SSPS; how to use Amorphous Cores in the design of HVIT and the advantages it brings; why "series-wound problem" happens and the relationship with SSPS switching frequency; how to improve power losses of LSPS and how to use PCB for the thermal design of SSPS.

论文针对以上四个问题，详细分析在恒功率型线性以及开关二次侧情况下电流滤波网络的设计；功率等级提升情况下，非晶材料在高频高隔离变压器中的应用及优势；&串扰&问题的原因以及二次侧工作频率的影响；线性二次侧的损耗改善方法以及开关二次侧利用PCB散热的实现。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。