查询词典 jib

The three head sails comprise flying jib, inner jib and a Bentinck sail.

三个船首斜帆是由船首桅帆、内侧船首三角帆以及三角形大横帆构成。

One of two spar s or booms projecting from the side of a bowsprit for spreading the jib or flying - jib guys.

左右撑杆从船首斜桁侧边支出的两根圆杆或桅桁下的一根，用于展开三角帆或伸开三角帆的绳索

A large jib used on a racing yacht.One of two spars or booms projecting from the side of a bowsprit for spreading the jib or flying-jib guys.

左右撑杆从船首斜桁侧边支出的两根圆杆或桅桁下的一根，用于展开三角帆或伸开三角帆的绳索

Head, crane operation with fixed fly jib, crane operation with luffing fly jib, crane Superlift operation with main boom, crane Superlift operation with fixed fly jib, and crane Superlift operation with luffing fly jib.

QUY600 QUY800 该系列产品最显著的特征是带超起工况。具有主臂重型臂工况、主臂轻型臂工况、固定副臂工况、塔式副臂工况，以及超起主臂工况、超起固定副臂工况、超起塔式副臂工况。

This paper analyses the operation characteristic of portal jib crane,and discuss selecting principle and calculation formulas of motor and capacity which frequency inverter and it's brake type and accessory of the AC variable frequency and speed regulation applied to portal jib crane , finally introduce case which CHV190 inverter applied in portal jib crane .

本文分析了门座式起重机的运行特点，详细阐述了英威腾 CHV190起重机专用变频器用于门座式起重机调速时的电动机、变频器及其制动方式的选型原则和变频器周边设备的容量计算方法，最后介绍了 CHV190变频器在门座式起重机中的应用案例。

Point to take MQ2535 portal crane jib system as to research object, take finite element and mechanical kinetics as to theoretical fundamental, make use of ansys8.1 to emulate jib systemic at the course of luffing in dynamics , obtain luffing procedural dynamics data of rigid body and elastic body of the jib system , according to those data,which is to improve these system designs beneficial conclusion henceforth.

针对以上问题，本文以MQ2535门座起重机臂架系统为研究对象，以有限元和机械动力学为理论基础，借助ANSYS8.1对臂架系统的变幅过程进行了动力学仿真，得到了臂架系统刚体和弹性体变幅过程的动力学数据，从数据中得到了对今后改善该系统设计的有益结论。

The jib system of portal crane is considered to be elastomer in this paper. Besides, taking finite element as basic theory and mechanical dynamics as analysis method,the paper simulates the virtual luffing process of jib system and seeking the relationship between plane movement and dynamic pressure condition of jib system using ANSYS8.1. By analyzing ,the paper gives some advice on structure optimizing.

针对以上问题，本文以MQ2535门座起重机臂架系统为研究对象，将门座起重机整个臂架系统视为弹性体，以机械动力学和有限元为理论基础和分析手段，运用有限元软件ANSYS8.1模拟臂架系统的实际变幅过程，探寻物品在变幅过程中水平移动与臂架系统结构动态受力之间的关系；通过分析其受力情况，对其结构的优化提出了一些建议。

This article mainly includes: taking lowest weight as optimization goal, criterionrequest as restrict, optimization programme on jib arm structure of giant floatingcrane design is written based on genetic algorithm;according to jib arm structure ofgiant floating crane which is being designed and other former ones, size and structureform of jib arm are deeply discussed, furthermore, relatively reasonable jib armstructure scheme is proposed.

课题主要内容：以结构重量最轻为优化目标、以规范要求为约束条件、使用遗传算法编制了起重机臂架优化设计计算程序，根据目前正在设计建造的和国内已有的起重臂架结构，在对拔杆式臂架的尺寸及结构形式进行了充分讨论研究的基础上，提出相对合理的臂架结构设计方案和设计思路。

At present, I have to manually plant products, electrical, pneumatic, hydraulic, worm rotation, and other series valves, product design and manufacture GB, JIB, ANIS, API, BS, DIN, and other domestic and foreign advanced standards.

目前我厂主要产品有手动、电动、气动、液动、蜗轮转动等各种系列阀门，产品设计与制造GB、JIB、ANIS、API、BS、DIN等国内外先进标准。

Jib, a pretty writer who believes in true love, is living with her boyfriend Loyd, who is an advertising creative.

漂亮女作家Jib相信真爱的存在，她和当广告创作的男友同居。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。