查询词典 structure stability

In order to ensure the construction process safe and the bridge structure would reach its ideal state, lots of questions in its whole construction control and swivel ereetion construction control are discussed and studied.Firstly, based on the experiences about the cable-stayed bridge's construction control, do emulational anlysis to Sui Fenhe cable-stayed bridge by using the bridge analyzing program of BSAS and Dbridge, analyze the parameters' sensitivity, study the temperature effects, discern the relevant parameter's errors about construction control and optimize its construction state.Secondly, as an example of Sui Fenhe cable-stayed bridge's swivel erection construction control, present the design and construction techniques of simple point supporting and even articulation and level swivel erection for long-span cable-stayed bridge, study its load-bearing system, balance system, power system and adjustment system in detail, check its static stability on the state of swivel erection construction and monitor the whole swivel erection construction.

首先，在斜拉桥施工控制经验的基础上，用桥梁结构分析程序BSAS和Dbridge对绥芬河斜拉桥进行了详细的施工仿真分析，参数敏感性分析，温度效应分析，施工控制影响参数误差分析和结构施工状态的最优化控制；其次，以绥芬河斜拉桥转体施工控制为例，介绍了大跨度斜拉桥单点平铰水平转体设计与施工技术，详细研究斜拉桥单点平铰水平转体支承系统、平衡系统、动力系统和调整系统，并对本桥结构转体施工做静力稳定性验算及转体过程的监控。

The crawler and swing arm both are driven by DC servo motor directly, the complex driving devices are eliminated, swing arm drive DC servo motor is installed in the interior of driven wheel and swing arm wheel; it ensures robot has high maneuverability and strong over-obstacle capability, at the same time it overcomes the disadvantages of traditional drive and transmission system, such as a lot of elements, complex structure and low efficiency, it reduces energy consumption, saves interior space, reduces overall weight, increases the work reliability and running stability of robot and provides new design programs and new technology channels for small-sized crawler ground movable robot drive device.

机器人的履带和摆臂均由直流伺服电机直接驱动，省去了复杂的传动机构，摆臂驱动直流伺服电机则安装在从动轮和摆臂轮内部，在保证机器人具有高机动性和强越障力的同时，克服了传统驱动、传动系统零件众多、结构复杂、效率低下的缺点，降低了系统能耗，节省了内部空间，减轻了整体重量，提高了机器人的工作可靠性和行驶稳定性，为小型履带式地面移动机器人驱动装置提供了新的设计方案和新的技术途径。

The yield of oat starch was 76.8%, and the purity reached 96.4% with the optimal extracting conditions. Compared with potato starch, corn starch and pea starch, oat starch is higher in solubility and distensibility than corn starch and pea starch, is higher in blue value than potato starch and corn starch, but lower in freezing-thawing stability and transparency than potato starch. Those properties were related to the molecule structure.

在此条件下，燕麦淀粉得率为76.8%，纯度为96.4%；和马铃薯淀粉、玉米淀粉和豌豆淀粉相比：燕麦淀粉的溶解度、膨润力显著高于玉米淀粉和豌豆淀粉，蓝值显著高于玉米淀粉和马铃薯淀粉，而与马铃薯淀粉相比，冻融稳定性和透明度较差，这与燕麦淀粉的分子结构和组成有关。

Speed-sensorless vector control system has two crucial problem, namely, the stability of speed identification and the controller structure.

无速度传感器矢量控制系统中存在两个关键性的问题，即速度辨识的稳定性问题和控制器结构问题。

Coal lane sheet crack hierarchical structure of the roof span stability analysis.

煤巷板裂结构顶板分层稳定跨距分析。

The calculation results indicate that: The stress and the stability against sliding are fit for the design specification, and the shape of topology structure approaches the one in engineering practical requirements.

优化结果表明：结构的应力和抗滑稳定均满足规范要求，且优化结果与工程实际要求较吻合，同时也从数值上验证了此方法对实体重力坝非溢流坝段进行拓扑优化是可行和有效的。

This hydrophilic-hydrophobic-hydrophilic "sandwich" structure is conducive to the self-stability in mechanics, combination with membrane protein and transmembrane transport.

该亲水-疏水-亲水的&三明治&结构，有助于自身的力学稳定、与膜蛋白的结合、跨膜运输等。

Objective: To investigate the effects of the number of the screw in the dynamic compression plates on the stability of plate and screw structure in vitro.

目的：探讨螺钉数量对骨与钢板螺钉结构系统稳定性的影响，为临床上钢板螺钉内固定应用提供实验数据。

Objective: To investigate the effects of the position of the screw in the dynamic compression plates on the stability of plate and screw structure in vitro.

目的：探讨螺钉位置对骨与钢板螺钉结构系统稳定性的影响，为临床上钢板螺钉内固定应用提供实验依据。

The arch dam is a sort of space shell structure with complicated shapes. The stress level of dam body and the stability condition of abutment rock are the two key indexes to evaluate the safety of arch dam.

拱坝是一种外形复杂的空间壳体结构，坝体的应力水平和坝肩岩体稳定状况是评价拱坝安全性的两个重要指标。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。