超聚束 的英文怎麼說
中文拼音 [chāojùshù]
超聚束
英文
overbunching-
High accuracy kdp crystal optics is now considered as one of optics that is the most difficult to be processed for its series of disadvantageous characteristics to optics processing such as anisotropy, soft nature, easy to deliquesce, high brittleness, sensitive to temperature change, easy to crack and so on. therefore the long machining period, low percent of pass and astaticism quality has become the bottleneck of icf technology, and the surface quality control of kdp crystal processing has become the key problem to be solved in the research of icf in our country
Kdp晶體零件是目前公認的最難加工的光學零件之一,因為kdp晶體具有各向異性、質軟、易潮解、脆性高、對溫度變化敏感和易開裂等不利於光學加工的特點,所以加工周期長、合格率低、質量不穩定成為慣性約束聚變技術的瓶頸, kdp晶體超精密加工表面質量控制問題已經成為我國慣性約束聚變研究中亟待解決的關鍵問題。The expansion agents can only make up the shrinkage to some extent, and the compensation effects would be reduced when the retardener and fly - ash are used. the expansion agents are not panaceas to avoid the shrinkage cracking as expansion can also reduce the concrete soundness. under bad curing condition, the polypropylene fibrillated film fiber can improve concrete ' s anti - crarking property, while the nominal steels have very unobvious effects. to reduce the concrete shrinkage thus avoid the cracking, the former factors must all be taken into account in concrete proportion design to develop sound concrete
研究結果表明,水泥的品種和用量是影響混凝土收縮值的主要因素之一,當混凝土中水泥用量超過470kg / m ~ 3時,混凝土的收縮值超過400 10 ~ ( - 6 ) ,在約束狀態下存在高開裂風險;採用細砂使混凝土單位用水量顯著提高,收縮值也大幅增加;優質粉煤灰總體上能抑制混凝土的收縮,以超量方式摻入其抑制作用更加明顯,但粉煤灰混凝土早期的粘聚性較差,應注意養護,以免失水產生龜裂;早強減水劑和緩凝減水劑都會使混凝土收縮值增加;膨脹劑只能補償混凝土部分收縮,同時受緩凝劑和粉煤灰的抑制,而且膨脹使混凝土的體積安定性增加了不確定因素,膨脹劑不是解決混凝土收縮裂縫的良方。Ultrashort pulse amplification, including chirped pulse amplification ( cpa ) and optical parametric chirped pulse amplification ( opcpa ), has been becoming one of the hot researches in the field of ultrashort pulse laser technology because ultrashort and ultrahigh intensity pulse laser has important applications in high field physics, such as x - ray laser, icf, laboratory astrophysics, laser particle accelerator, and so on
由於超短超強脈沖激光在x射線激光、慣性約束核聚變、實驗天體物理、激光粒子加速器等強場物理研究領域內的重要應用,超短脈沖激光放大技術目前已成為超短脈沖激光技術研究的熱點之一。它包括啁啾脈沖放大( cpa )和光參量啁啾脈沖放大( opcpa )兩大類。The theory hypothesis of " pore restriction " is first proposed in this paper. during polymerization, one end of linear molecule inserts the channels of zeolite to form hard end through chemical bond or supermolecule acting force, the other end forms soft end through condensing or polymerizing with other monomer molecule. on the basis of the theory hypothesis, a kind of novel pattern of organic - inorganic composite materials - pu / zeolite composite materials - has been designed
本文首次提出了「孔約束」的理論假說,即在高分子材料聚合過程中,線型分子的一端通過化學鍵或超分子作用力插入分子篩的孔道中形成硬端,而另一端則與其它單體分子縮合或聚合形成高分子材料的軟端;在此假說的基礎上,設計了一類孔約束型有機?無機復合高分子材料的新模式,即聚氨酯/沸石分子篩復合材料。Chapter 2 : characteristics of propagation of ultra - intense laser beam in a partially stripped preformed plasma channel is discussed, in which the relativistic self - focusing effects, together with the perturbed plasma density, is discussed
第二章:本章闡述了超強激光光束在拋物型部分電離的預等離子體(聚焦和散焦)隧道中的傳輸特性。研究了相對論自聚焦效應和等離子體波引起的密度擾動對傳輸的影響。Synthetic aperture radar ( sar ) is one of the most advanced imaging sensors
聚束式合成孔徑雷達是一種具有超高分辨力的雷達成像模式。Influences on host plant cell pathology by tumv infection tumv particles were scattered in cytoplasm area of diseased cells separately or in bundles. the pinwheels, scrolls and laminated aggregates, which were the cross sections of cylindrical inclusion bodies, were observed under transmission electron microscope. meanwhile, pathological changes of diseased chloroplasts " morphology and structure took place
Tumv侵染寄主的細胞病理學特徵利用透射電鏡觀察接種寄主細胞的超薄切片,分離自杭州榨菜上的tumv分離物jc - 1在青菜和芥菜的細胞質中病毒粒子分散或成束分佈;細胞質中存在不同形態的柱狀內含體,分別為風輪體、捲筒體、片層聚集體;同時,葉綠體發生了形態和結構上的改變。In order to make the mgb more easy - operating, ultrasonic testing simula - tion software was designed and developed, which has a good user - oriented interface and can simulate easily the inspection fields of planar transducer, focused transducer and angle beam transducer. it also can help inspectors analyze the inspection procedures and predict the feasibility of actual ultrasonic testing, then choose suitable inspection parameters. the side - drill hole and flat - bottom hole are commonly used in ultrasonic
為了使多元高斯模型使用更加方便,本文設計並開發了基於多元高斯聲束理論的超聲檢測聲場模擬軟體,該軟體具有良好的圖形用戶界面,操作簡單,可方便地實現直探頭、聚焦探頭和斜探頭的檢測聲場模擬,可幫助檢測人員進行檢測過程的分析及結構件的可檢性預測,並選擇合適的檢測工藝參數。In order to deal with effect of the high damping, focusing probe with focused sound field is used in testing. the image device of ultrasonic c - scanning, which has functions of ultrasonic testing, pc - based control, data collection, data storage, data processing and image displaying together, is applied in testing for the sake of visual testing result
為了克服高阻尼影響,採用了具有聲束聚焦性能的聚焦換能器對不同形狀的該種復合材料工件進行檢測;為了得到直觀的檢測結果,運用了將超聲檢測與微機控制和微機進行數據採集、存貯、處理、圖像顯示集合在一起的超聲c掃描成像技術,並得到了工件內部缺陷的橫截面圖。The condition under which higher - order dispersive effects can be neglected is also discussed with numerical examples. 6. based on the fourier optics, the focusing of ultrashort pulses by a silica lens in both cases of constant beam waist and constant diffraction length is studied considering dispersion of first, second and higher order, respectively
6 ,使用傅立葉積分變換法,在考慮透鏡色差和高階色散效應的較為一般情況下,分別研究了等束寬超短脈沖高斯光束和等衍射長度超短脈沖高斯光束通過硅玻璃透鏡的聚焦特性。Emphasized on the influence of planar reflector on focusing beams, the model of immersion focusing ultrasonic field based on focusing beams reflected by planar reflector is given. and it has been studied on immersion testing the cylindrical objects with the single focus transducer, which is available for small - diameter pipelines
分析了平面反射鏡對聚焦聲束的影響,首次建立了超聲聲束經平面反射鏡反射后的聚焦超聲場模型;分析表明,單焦距探頭經平面反射鏡反射后可用於小管道的智能檢測。In a laser - powered plasma accelerator, an ultrashort laser pulse is focused into a helium jet that is a couple of millimeters long
在雷射電漿加速器里,一個超短的雷射脈沖聚焦到一束大約兩、三公?長的氦噴射氣流中。The fusion mechanism of large deuterium clusters ( 100 ~ 1000 atoms / per cluster ) in super - intense ultra - short laser pulse field, coulomb explosions of micro - cluster in solids, gases and large - size clusters have been studied using the interaction of a high - intensity femtosecond laser pulses with large deuterium clusters, collision of high - quality beam of micro - cluster from 2. 5mv van de graaff accelerator with solids, gases and large clusters
摘要用2 . 5mv靜電加器提供的高品質微團簇束與固體、氣體和大尺度團簇( 100 - > 1000原子團簇)碰撞,超強飛秒激光與大尺度氘團簇相互作用,研究微團簇在大尺度團簇中的庫侖爆炸特性,研究超短超強激光場中大尺度氘團簇的聚變機理。Confinement fusion ( icf ). the development of the laser technology, the progress of the interaction of the us - ui laser pulse with plasma ( physics of intense field ), and the research of the fast ignition are firstly introduced
這些結果不僅對于理解超短超強激光與等離子體相互作用的物理機制有益,而且對即將進行的慣性約束聚變( icf )中「快點火」 ( fastignition )研究也是非常重要的基礎工作之一。分享友人