primary crystal 中文意思是什麼
primary crystal
解釋
初晶石墨-
Influenced by the alternating current field, all of the eutectic microstructure of al - 20si - 5fe - ti alloy changed into very small particles which is well - distributed on the base of a - al. electromagnetic stirring stimulates the forming of equiaxed crystal in al - 20si - 5fe - mn alloy. primary iron - phase is transformed from thick needle into smooth block
電磁攪拌促進al - 20si - 5fe - xmn合金中等軸晶的生成，初生富鐵相由原來粗厚的片狀物轉化成比較圓整的塊狀，共晶組織中鐵相主要以較短的針片狀存在。 -
The concept of " timing " in the article is not the clock in our ordinary living, but syntheses which is made up of some frequency source in the signal generator ( such as cs atom frequency standard, rb clock & high accuracy quartz crystal oscillator ) which produces the primary frequency, the matching input interface and the matching output interface and controlling circuit etc. for example, bits is a kind of timing equipment, which is used to control the timing of some functions
本文論及的「時鐘」概念不是指日常生活中使用的鐘表，而是由產生基準頻率的信號發生器（如銫原子頻率標準、銣鐘及高精度石英晶體振蕩器等）中的某種頻率源以及相配套的輸入、輸出介面和控制電路等組成的一整套具有特定同步定時功能的綜合體。如bits就是一種時鐘設備，它提供用在通信系統中控制某些功能的定時的時間基準設備，時鐘提供的信號稱為基準信號、定時信號或同步信號。 -
The eutectic crystal al3fe often is " needle " shape or short line shape but the shape of primary crystal al3fe is relative to the adding amount of fe powder and the temperature of heat preservation stirring. while the adding amount of pure fe powder is few and the temperature of heat preservation stirring is higher than the temperature of liquidus of al - fe binary alloys equilibrium phase diagram, the reaction synthetical primary crystal al3fe exhibits short worm shape
加入量少，保溫攪拌溫度在al - fe二元合金液相線以上，則形成的初晶al _ 3fe呈短蠕蟲狀； fe加入量大，保溫溫度在液相線以上，初晶al _ 3fe以平面方式生長，復合材料中的初晶al _ 3fe呈塊狀或粒狀，尺寸較大（ 10 m以下） 。 -
It has broad application prospect in the following fields such as microelectronics, photoelectronic devices, large screen flat panel display, field emitter array, acoustic surface wave device, photon crystal, light waveguide array, holographic honeycomb lens and micro - optical element array, micro - structure manufacture, fabrication of large area grating and grid of high resolution, photoresist performance testing, profile measurement and metrology, etc. the paper only involves the primary research of interferometric lithography
在微電子、光電子器件、大屏幕平板顯示器、場發射器陣列、表面聲波器件、光子晶體、光波導陣列、全息透鏡和微光學元件陣列、微結構製造，高分辨、大面積光柵和網格製造，在抗蝕劑性能測試、面形測量和計量等領域，干涉光刻技術都具有廣闊的應用前景。 -
Used solid - liquid reaction synthesis technology and stirring casting and metal mold chilling processing, al3fe particles and al3fe + al2o3 particles reinforced pure al matrix in - situ composites are fabricated. the metallography analysis shows that the intermetallic al3fe exhibits two kinds of crystalline state - primary crystal al3fe and eutectic crystal al3fe - in al + fe reaction synthetical al matrix in - situ composites
利用固-液反應合成技術和攪拌技術，並結合金屬型激冷鑄造工藝，制備出了al _ 3fe粒子、 al _ 3fe粒子+ al _ 2o _ 3微粒強化的純al基原位復合材料。 -
Generally, the main content is as follows : in the introduction, we summarized the fields of application, materials used and the primary forms of design of crystal polarizing prisms. the present research correlative to this field, the source of this research subject, and the necessity of the research are also introduced
概括起來主要有以下幾方面的內容：在緒論中綜述了晶體偏光器件的應用范圍、製作材料，主要的設計形式，對國內外相關研究的現狀做了簡介，介紹了課題的來源，並指出了課題研究的必要性。
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