双线的

The first one is an algorithm with terminal sliding mode equality constraint. The second is a dual-mode control scheme, which enlarge the terminal region. The sliding mode based MPC is implemented while system state is outside of terminal region, and sliding mode variable structure control designed off-line is used once system state arrives in the terminal region.

第一种方法为终端滑模等式约束非线性模型预测控制方法，首先离线设计切换函数使得滑动模态渐近稳定，然后在有限预测时域的基础上对切换函数附加一个终端等式约束；第二种方法为双模控制方案，在终端区外采用模型预测控制，使得系统状态在有限时域内到达终端区内；在终端区内部采用离线设计的滑模变结构控制，使得系统渐近稳定。

In the practical examples we optimized a simple double-curved arch dam with a single circle centerand equal thickness,and a complicated logarithmic spiral double-curved arch dam according to this designnotion,calculation results of the practical examples show that the design method is audio-visual and rational.

在实例中按照这种设计思路，对体形较简单的单圆心等厚度双曲拱坝和较复杂的对数螺旋线双曲拱坝分别进行了优化设计，计算结果表明该优化设计方法直观、合理。

A total of 20 groups of meiofauna in the Southern Yellow Sea: Nematoda, Copepoda, Polychaeta, Kinorhyncha, Bivalvia, Ostracoda, Amphipoda, Tanaidacea, Isopoda, Cumacea, Gastropoda, Gastrotricha, Halacaroidea, nectochaeta, Amphiura, Nemertina, Insecta, Priapulida, Turbellaria and others were identified.

共鉴定出自由生活线虫、底栖桡足类、多毛类、动吻类、双壳类、介形类、端足类、异足类、等足类、涟虫类、腹足类、腹毛类、海螨类、疣足幼体、蛇尾类、纽虫类、昆虫类、曳鳃动物、涡虫类和其它类等20个小型底栖动物类群，小型底栖动物的平均丰度为(1186.12±486.07)ind.10cm~(-2)，其中海洋线虫占绝对优势，其平均丰度为(1063.97±469.98)ind.10cm~(-2)，占小型动物总丰度的89.702%；其次是底栖桡足类，占4.193%。

A planar geometric spline, biarc spline, is generalized to a 3D geometric spline whose curvature and torsion are all constant.

给出基于非线性规划解的双圆柱螺线样条局部构造法，把平面几何样条——双圆弧样条推广到常曲率和常挠率的空间几何样条。

In the other style, the input light is circularly polarized and the Wollaston prism is parallel to the birefringence axis.

通过理论分析发现，除了目前通常采用的线偏振光沿光纤双折射主轴注入结合渥拉斯顿棱镜45°检偏的测试方式之外，另有两种测试方式也可以得到最大灵敏度，一种是线偏振光45°注入结合渥拉斯顿棱镜沿轴检偏，另一种是圆偏振光注入结合渥拉斯顿棱镜沿轴检偏。

Based on the Flory-Huggins theory, the binodal, spinodal and critical point equations for polymer-solvent-nonsolvent system are derived in detail.

以Flory-Huggins理论为基础，详细推导了聚合物－溶剂－非溶剂三元聚合物成膜体系的双节线、旋节线和临界点求解方程，提供了方程的求解方法。

The liquid-liquid equilibrium binodal curves and the tie-line data of an epoxy cotton seed oil/acetic acid/water ternary system.

测定了环氧棉籽油－醋酸－水三元系分别在30℃，40℃，50℃，60℃下的液－液平衡双结点曲线，以及在40℃，50℃，60℃下的液－液平衡系线数据；分别应用物料衡算法和系线中点轨迹法对实验数据进行了检验。

Objective The pathologic basis of X-ray express and the significance of differential diagnosis were discussed with double contrast examination.Methods The reviewable analysis of the X-ray express of benign and malignant ulcer of stomach in 230 cases.

目的 探讨胃双对比造影检查中各X线表现的病理基础及其鉴别诊断意义方法回顾性分析230例良、恶性胃溃疡的X线表现。

Compared with standard images,bony images showed bony thorax more clearly,especially the ribs overlapped by heart and the subphrenic structures,and soft tissue images showed lung lesions more clearly.Conclusion DR energy subtraction chest films can show rib fracture and lung lesions clearly,and it is of diagnostic value for the patients of chest trauma and small lung lesions.

我院于2004年5月引进了美国GE公司生产的RevolutionTMXR/d型双板数字放射摄影系统（digital radiography，DR），该系统具有双能减影功能，对160例胸部外伤或肺部疾病患者进行了DR能量减影胸部后前位X线摄影检查，分别获得标准影像、软组织影像和骨骼影像，摄影质量好，有较大的临床应用价值。

Bilateral lung fields full of honeycombing change. The official readinglung fields, which possibly represent supraimposed infiltrates.

胸部X线显示：广泛性的肺间质纤维化，双侧整个肺叶充满蜂窝状改变，双肺有散在的密度增高影，可能代表浸润。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。