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pre·form 英ˈpriːˈfɔːm美ˈpriˈfɔrmAHDprēʹfôrmʹ 高COCA⁸⁷⁰²⁸BNC²³⁶²¹³⁺¹iWeb²⁷⁹⁹⁷
基本英英搭配记法派生词例句Thesaurus例句
vt.预先形成¹⁸;预制⁶⁷n.预成型件¹⁰;雏形⁵过去分词preformed现在分词preforming三单preforms
Verb:
form into a shape resembling the final, desired oneform or shape beforehand or determine the shape of beforehandlaminated preform叠层预成型物…
蒋争熟词记忆pre-预先form形成⇒预先形成pre-预先form形成⇒预先形成Ppreformer预成形机Ppreforming压片预成型Ppreformativea.使预先形成的前缀的
动词100%
用作及物动词The superiorpreformof composites is a basic requirement and one of key factors for fabricating superior properties composites.摘要高质量复合材料预制块是获得高性能复合材料的基本要求和关键要素之一。
An algorithm of three-dimensional braided composite materialpreformimage proce ssing based on mathematics morphology is presented.提出一种基于小尺度的数学形态学的三维编织复合材料预制件图像的边缘检测方法。as in.destine
同义词 doom,intendallot,appoint,assign,consecrate,decide,decree,dedicate,design,determine,devote,earmark,fate,foreordain,predestine,preordain,purpose,reservedoom to,mark out
反义词 hesitate,keep,misuse,use,wasteas in.determine
同义词 elect,establish,fix,resolvedestine,doom,fate,finger,foreordain,predestine,predetermine,preordain,purpose,settlemake up mind
反义词 destroy,ignore,unsettlebegin,doubt,hesitate,miss,overlook,start,waveras in.foreordain
同义词 destine,foredoom,foreshadow,foretell,prearrange,predestine,predetermine,preordain,reservedestinate
destineverb predetermine, ordain
allot,appoint,assign,consecrate,decide,decree,dedicate,design,determine,devote,doom,doom to,earmark,fate,foreordain,intend,mark out,predestine,preordain,purpose,reserve
destinesverb predetermine, ordain
allots,appoints,assigns,consecrates,decides,decrees,dedicates,designs,determines,devotes,doom to,dooms,earmarks,fates,foreordains,intends,marks out,predestines,preforms,preordains,purposes,reserves
determineverb choose, decide
destine,doom,elect,establish,fate,finger,fix,foreordain,make up mind,predestine,predetermine,preform,preordain,purpose,resolve,settle
determinesverb choose, decide
actuates,arbitrates,calls the shots,cinches,clinches,completes,disposes,drives,ends,figures,finishes,fix upon,halts,impels,inclines,induces,moves,nails down,opts,ordains,persuades,pins down,predisposes,regulates,resolves,rules,settles,takes a decision,taps,terminates,ultimates,winds up,wraps up
foreordainverb doom, fate
destinate,destine,foredoom,foreshadow,foretell,prearrange,predestine,predetermine,preform,preordain,reserve The Effects of carbon fiber content on microstructure of preform, densification and mechanical properties of C/C composites were investigated.
研究了炭纤维含量对预制体微观结构、致密化过程及力学性能的影响。 cnki
The Bakelite resin could be compression molded from a loose powder or compressed into a preform, then molded.
胶木即酚醛树脂可从松散的粉末压缩模塑或先压缩预制成型，然后模塑。 chinavalue
The distribution laws of pressure and density in pressing process of ring preform are researched in the paper.
研究了环形粉末预制坯压制过程中压力和密度变化规律。 cnki
The experiments show that tested results are consisted with handiwork. This system proved that it is possible for stitch of composite material preform will be analyzed using wavelet transform.
实验结果说明，该系统的测试结果与手工测量结果相吻合，从而还证实了小波变换用于复合材料预制件花节长度测量是可行的。 cjig.cn
The fabricating process of preform and factors having effect on it were also studied systematically.
系统地研究了预制块的制备工艺过程及影响因素。 chemyq
The flow front of ZL109 melt in mullite chopped fibre preform during melt infiltration was investigated with a method called stopping squeeze casting.
用中断挤压铸造法研究了 ZL109合金液在莫来石纤维预制块中的流动状况。 chemyq
The influence of technology for the preparation of fluorozirconate glass preform made of fibers on scattering loss of bulk glass and total loss of fibers was investigated.
研究了氟锆酸盐玻璃光纤预制棒制备工艺对块状玻璃散射损耗和光纤损耗的影响。 cnki
The properties of preform, the flaw generated during the infiltration, and the new phase appear in the composites have effect on the coefficient of thermal expansion.
此时，预制型的性能、浸渗过程形成的缺陷以及复合材料中出现的新相等都会影响到材料的热膨胀性能。 fabiao
The reasonable shape of preform and distribution law of field variables in forming process could be obtained by equipotential field method compared to the existent electrostatic field method.
与已有静电场法相比，类等势场法不仅能获得合理的预制坯形状，通过分析还可以获得其成形过程的合理场变量分布规律。 cnki
The technology of P/ M hot- forging is introduced for assault block as an example. The design of preform and forging die is analyzed with the precautions and problems often observed during hog- forging.
本文以冲击块为例介绍了粉末冶金热锻的工艺，对热锻中的预成形坯设计、锻模设计作了进一步探讨，分析了热锻中的注意事项和经常出现的问题。 cnki
They are drawn from a much larger“ preform” block of the material when heated, in much the same way that conventional optical fibres used in telecommunications are created.
声学纤维和电信传统光学纤维的选材方法非常相近，都是在加热状态下从大量的雏形材料中选取出来的。 ecocn
While women were able to preform well in all four activities at once, men performed, on average, worse when it came to planning to search for the key.
结果是，女性几乎在这四个任务里都表现得很好，但是男性却差强人意，尤其是在处理寻找钥匙这个任务的时候。 yeeyan
A Ni base superalloy columnar preform were produced through nitrogen spray atomization and deposition.
利用氮气雾化喷射沉积技术成功地获得了宇航用变形镍基高温合金柱形坯。 iciba
A system consisting of CCD sensor and computer may be used to test surface braiding angle of three dimensional composite material preform, and analyse its unevenness.
该系统以 CCD为传感器，与微型计算机连接，进行三维编织复合材料预制件表面编织角的检测，并对其进行不匀分析。 chemyq
An algorithm of three-dimensional braided composite material preform image processing based on mathematics morphology is presented.
提出一种基于小尺度的数学形态学的三维编织复合材料预制件图像的边缘检测方法。 cnki
Based on the knowledge of producing optical fiber preform, MCVD process was selected as the main research object.
在了解光纤预制棒加工工艺的基础上，选择 M CVD法为研究对象。 chemyq
Microstructures of the preform and the composite were analyzed under SEM and TEM.
利用SEM和 TEM等方法对晶须预制块和复合材料进行了微观组织结构分析。 cnki
On the basis of experimental data, a densification rate mode to describe the woven preform deposited in the thermal gradient CVI process was put forward.
主要是关于热梯度化学气相过程中预制体致密机理的探讨。 cnki
SEM observation showed that the preform particles become smooth from sharp angle after baking in a furnace, and the interlace area between two particles is larger and changes smoothly.
扫描电镜观察表明，在焙烧期间预制块颗粒形状由尖角形变为圆形，颗粒之间的搭接面积变大且过渡平缓； www.csu.edu.cn
The experimental results show that the compressive strength of preform increases with the increasing of fiber volume fraction and binder mass fraction.
试验结果表明，氧化铝短纤维预制件的抗压强度随着纤维体积分数的升高而升高，随着黏结剂质量分数的提高而升高。 cnki
The future development trend of preform preparation methods are also predicted.
对目前预制块制备技术的发展方向进行了展望。 cnki
The preform for FGH95 turbine disk forging was designed by using the preform optimization prototype system developed by the authors, the obtained results were satisfied.
应用根据这种方法所建立的锻件预成形设计原型系统，对 FGH95合金涡轮盘锻件用坯料进行预成形设计，取得了令人满意的结果。 cnki
The numerical simulations of the casting process for making metal matrix composite by infiltrating melting alloys into a fiber preform are studied.
研究了如何应用数值方法模拟用金属液浸润纤维预制模来制造金属基复合材料的过程。 chemyq
They are drawn from a much larger“ preform” block of material, in much the same way that conventional optical fibres are created.
它们从大块的材料上分离出来,其方法和传统的光学纤维提取差不多。 yeeyan
This paper introduced mode of collecting, technology of filtering and measuring process about image of three dimension composite preform surface.
首先介绍了三维编织复合材料预制件表面图象的采集方式、滤波技术以及平均编织角的测试过程； cjig.cn
This paper introduces basic principle about analysis system of surface image of3 D braiding composite preform.
介绍了三维编织复合材料预制件表面图像检测与纹理分析的基本原理。 dictall
This paper establishes, from a geometrical- optics point of view, a theoretical formula for calculating the refractive index profile of a preform by forward scattering.
本文从几何光学出发，建立了利用预制棒的前向散射决定预制棒芯折射率分布的理论公式。 cnki
Transverse feeding of molten metal in continuous fiber preform was investigated theoretically and experimentally.
研究了金属液在连续纤维预制型中的横向补缩。 chemyq |