查询词典 four-fold

Linkage mechanism of study. Forepart all gather be linkage mechanism structural analysis and agency designer. In recent years so emphasize in kinetic synthesis dynamic and motility analysis. So text needle towards inquire into slider four-bar linkage mechanism agency positioning control.Research emphases are as PID control, fuzzy control, Fuzzy sliding mode control three kinds of controllers for control core. Permeate practical mechanism to positioning control to function. Simple exertion market vends signal extract card (PCL-833) and multi-function card (PCI-1711). Make it make signal extract and bring forth exportation control voltage. Will AC servo motor turn signal, as positioning system point of angle sensor. Reach to slider four-bar linkage mechanism servo positional control research.

连杆机构的研究，早期都集中在连杆机构的结构分析和机构设计，近年来也多著重於运动及动力分析上，因此本文就是针对於探讨滑块四连杆机构的定位控制，研究重点是以PID控制、模糊控制、模糊顺滑模式控制三种控制器为控制核心，透过实际的机构达到控制定位的功能，运用市面上贩卖的讯号撷取卡(PCL-833)和多功能卡(PCI-1711)，使其对讯号做撷取和产生输出控制电压，将AC伺服马达的转动讯号，作为定位系统的角度感测器，达到滑块四连杆机构伺服定位控制的研究。

Compare to other four syndromes,there is significant difference in Hp infection and histopathology.The main reason possible is that Fu Zhou and its peripheral region's specified weather and geographical environment There is a significant difference between light ,medium degree of splenogastric hygropyrexia syndrome and the other four syndromes.it is correlation to the severity degree of sinus ventriculi greater curvature's histopathology.

脾胃湿热证与其他四型相比在Hp感染、胃粘膜组织病理学上均存在显著性差异，分析其原因考虑福州地区特定的气候和地理环境可能是造成这一结果的主要原因；该证的轻、中、重不同程度在Hp感染上存在显著性差异，与胃窦大弯侧粘膜组织病理学的严重程度存在一定的相关性。

Whilst for the four heavy metals in the water-washing fly ash, the chlorination agents obviously affected their volatilization, especially of Zn and Cu, and more than 95% of the four heavy metals were volatilized after spiking chlorination agents.

水洗灰中重金属的挥发率受氯化剂影响更明显，其中Zn和Cu最为显著，添加氯化剂后，水洗灰中4种重金属的挥发率最高均达到95%以上。

The marking of the car of Ao Di is four circle wreaths and represent four companies of merger front.

奥迪轿车的标志为四个圆环，代表着合并前的四家公司。

Company Profile of Tianjin Feilong Tube Co., Ltd., is a good faith enterprise and one of famous enterprises in Tianjin, Tianjin Dagang is the backbone of the enterprise; founded in 1995 and currently employs 1300, of which 36 were in professional and technical personnel, Eight senior titles, and the factory covers an area of 600 mu, building area of 50,000 square meters, fixed assets 140 million yuan, the existing 19 high-frequency welded pipe production lines, four heat zinc production lines, four expanded pipe production line, as well as acid washing, annealing kiln, large slitting, 4, and assorted rolling production lines.

天津市飞龙制管有限公司，是全国诚信企业和天津市知名企业之一，属天津市大港区骨干企业；始建于1995年，现有员工1300名，其中专业技术人员36人，中高级职称8人，厂区占地面积600亩，建筑面积5万平方米，固定资产1.4亿元，现有19条高频焊管生产线，4条热度锌生产线，4条扩管生产线，以及酸洗、退火窑、大纵剪、4连轧等配套生产线。

Prism series:Triangular prism, right-angled prism、Four prisms, pentagonal prism, half pentagonal prism ,polyhedron prism, Rotor drum prism, Simite roof prism,right-angled roof prism,Amici Frisms,Four pyramid reflectors,pyramid,V- prism, Wedge Prism/ Folds the axis Prism, Wedge-shaped prism ,Trapezius prism, Cube prism,Reference prism,Target, Changes the prism, Trapezius roof prism,V- roof prism,Compound/Abbe prismAnd other combination prism and so on

棱镜系列：三棱镜、直角棱镜、四棱镜、五角棱镜、半五角棱镜、多面体棱镜、转鼓棱镜、斯密特屋脊棱镜、直角屋脊棱镜、五角屋脊棱镜、分光棱镜、四棱锥反射镜、角锥、道威棱镜、楔角镜/折轴棱镜、楔形棱镜、斜方棱镜、立方棱镜、参考棱镜、靶标、转向棱镜、斜方屋脊棱镜、道威屋脊棱镜、复合/阿贝棱镜及其他组合棱镜等。

In order to study the shear bearing capacity and failure mode of post-installed anchor group, four members were designed with different anchor edge distance and anchor space length. Each member has four anchors.

通过后锚固4根锚栓的4个试件，对混凝土结构后锚固的群锚抗剪承载力和群锚试件的破坏模式进行研究，考虑了锚栓边距和锚栓间距对试验结果的影响。

Zhao Tuo aware of Guangzhou defense essentials, in order to prevent the extension of the North South war, Lingnan to strengthen the control and strict closure of the Five Ridges Commissioner of the four - Wang Pu customs clearance Kuang Pu, Yangshan customs clearance Huangshui River; cut off four new Road -- Guangdong-Jiangxi Nanxiong all the way, Hunan, even all the way to Guangdong, Hunan, Guangxi income-County all the way to Guangxi and Hunan, Jiang Jing way; built to defend the three Panyu line of defense: a Lechang Renhua a line of Nanxiong, an Anglo-German defense line Qingyuan , Shek Mun Fort line of defense.

赵佗洞悉广州防御要领，为了防止北方战乱南延，加强对岭南的控制，严封五岭的四关——横浦关、诓浦关、阳山关、湟溪关；断绝4条新道——江西入广东南雄一路，湖南入广东连州一路，湖南入广西贺县一路和湖南入广西静江一路；构筑了捍卫番禺的三道防线：乐昌一仁化一南雄防线，英德一清远防线，石门要塞防线。

Many halides such as hydrocarbons and chlorinated four shuo, titanium tetrachloride, four completely miscible tin chloride, dissolved phosphorus trichloride, phosphorus oxychloride, arsenic and antimony trichloride.

上许多碳氢化合物和卤化物如四氯化碳、四氯化钛、四氯化锡完全互溶，还溶解三氯化磷、三氯氧磷、三氯化砷和三氯化锑。

Authors designed four mixtures of dense-graded asphalt stabilized macadam base with the method recommended by Technical Specifications for Construction of Highway Asphalt Pavement, Superpave design method, coarse aggregate voids filling method and Bailey method separately, and determined the pavement performances of asphalt stabilized macadam base mixture under the optimal oil-stone rate which include resistance capacity to vertical deformation and fatigue. Then, four design methods were compared and appraised. Based on the above study, a new asphalt-stabilized macadam base mixture gradation design method-five control sieve design method was put forward.

分别采用现行规范推荐法、Superpave法、主骨架空隙体积填充法和贝雷法设计了4种密级配沥青稳定碎石基层混合料，然后采用力学指标设计法确定了所设计的4种级配沥青稳定碎石基层混合料的最佳油石比，并对最佳油石比下的沥青稳定碎石基层混合料进行了抗永久变形性能和抗疲劳性能等路用性能的研究；根据设计过程和设计结果对4种级配设计方法进行了比较评价，在此基础上提出了新的密级配沥青稳定碎石基层混合料的级配设计方法－五控制点级配设计方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。