扇形工具 的英文怎麼說
中文拼音 [shānxínggōngjù]
扇形工具
英文
arc tool-
Suzhou s arts crafts represent a unique cultural style and workmanship developed over a thousand years under the influence of the wu culture and the skills of generations of artisans. most representative of suzhou style are embroidery, fans, national musical instruments, scroll mounting, lanterns, mahogany furniture, jade carving, silk tapestry, traditional painting pigments of jiangsixutang studio, the new year s wood - block prints of taohuawu studio, etc
蘇州工藝經歷了一千多年的繁榮，受吳文化之陶冶，積民間藝人之經驗，逐漸形成了一套獨特的工藝流程和文化風格，其中著名的有蘇繡蘇扇蘇樂蘇裱蘇燈蘇式紅木傢具玉雕緙絲姜恩序堂國畫顏料及桃花塢木刻年畫。Tradition says that the custom began in 1490 when, after the completion of the great fan vault in the nave of the abbey church, abbot peter ramsam gave his masons a well - earned holiday, telling them to pack their tools and then go out and enjoy them selves
傳說此俗開於1490年，修道教堂中殿的扇形大拱頂完工後，彼德?蘭山主持給工匠們放了一天勞動換得的假，讓他們收起工具，到外面痛快地玩玩。The analysis result indicates that, kdp crystal mechanics characteristics, such as young ’ s modules, shear modules, rigidity and so on, have intense anisotropy, which is the reason of the scallop distribution of light and shade appearing on
結果表明， kdp晶體材料的力學特性如彈性模量、剪切模量、硬度等具有強烈的各向異性特徵，這種各向異性特徵是單晶脆性材料超精密切削后產生明暗相間扇形分佈的根源，是影響加工表面質量的重要因素。Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent
本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。Tabular layout of article characteristics - part 129 : bonded abrasive segments, honing tools, abrasive bars and grindstones
製品特性圖表.第129部分:粘合扇形研磨塊膛磨工具分享友人