powder grain size 中文意思是什麼

powder grain size 解釋
火藥粒大小
  • powder : n 1 粉，粉末。2 （搽臉的）香粉；牙粉；發粉。3 （一服）藥粉；粉劑；散。4 塵土，泥屑；雪糝。5 炸藥...
  • grain : n 1 穀物，糧食〈英國叫 corn〉; 谷類植物。2 穀粒，籽粒。3 （沙、金、鹽等的）粒，顆粒，晶粒。4 些微...
  • size : n 1 大小，尺寸規模身材。2 （鞋帽等的）尺碼，號；（紙張的）開。3 巨大，大量；相當大的分量。4 〈口...
  1. We have developed the grain size varies among 2um to 15um grade superfine powder and the yearly output of which comes up to 20, 000 tons. our products mainly consist of calcite powder, french chalk, active coarse whiting and other jinshi brand series superfine powder, which are welcomed in the more than 10 provinces and districts markets. the company has owned a calcite mine, and the calcite storage capacity has reached to more than 2 million tons

    99年公司投資1500萬元引進細川德國alpine公司先進超細粉碎分級設備流水生產線，屬國內領先水平，開發了粒徑為2um - 15um級的超細粉體（年生產量2萬噸） ，主要生產方解石粉、滑石粉、硅灰粉、活性重鈣等金石牌系列超細粉體，暢銷國內10多個省市，產品深受各地用戶親睞。
  2. Based on in - situ investigation and laboratory experiments, the article analyzed in detail the factors which affect the transportation and strength characteristics of gangue cemented tailing grain fillings such as powder coal, water - reducer, mortar density and grain size distribution

    摘要以現場調查和室內實驗為基礎，從粉煤灰、減水劑、漿體濃度、粒級級配等方面，對煤矸石作為膠結充填骨料的管道輸送特性和強度特性進行了詳細的分析。
  3. In this paper, the contrast of original image is enhanced by nonlinear transformation based on the characteristics of grain image ; after comparing several methods of threshold segmentation and analyzing their performance and applicability on grain image, the adaptive threshold segmentation based on gradient image is presented ; the noise of binary image is reduced with morphological filter, the hollow in binary image is filled in and a recognition algorithm is designed to remove agglomerate particle ; on the basis of mathematical morphology two methods are adopted to segment agglomerate grains that are not agglomerated tightly ; the parameters of size and shape, perimeter, area, diameter, complexlity, longest feret diameter, shortest feret diameter etc, are extracted. this technique is applied in measurement of pearl powder ' s particle size

    本文根據粒度圖像的特點，採用非線性對比度增強處理改善顆粒顯微圖像的對比度；對多種閾值分割方法進行比較，分析了它們的性能和用於粒度圖像的適用性，在此基礎上提出了一種基於梯度圖像的動態閾值分割方法；對獲取的顆粒二值圖像進行形態濾波和空洞填充，設計了識別演算法去除凝聚體；對重疊不太嚴重的粘結顆粒採用了兩種基於數學形態學的分割演算法；提取了周長、面積、粒徑、復雜度、最長feret徑、最短feret徑等大小和形狀特徵參數，對珍珠粉等粉體粒度進行了測量。
  4. Abstract : taken as materials, ammonium paramolybdate, molybdenum tri - oxide, molyb denum dioxide and molybdenum powder of different layers in thickness are reduced at different temperatures, and by analyzing the grain size, oxygen content and mo rphology of the molybdenum powders obtained, the effects of reduction processing on the grain size and oxygen content of the molybdenum powder of different layer s in the same boat are discussed

    文摘:以仲鉬酸銨、三氧化鉬、二氧化鉬和鉬粉為原料，採用不同的溫度和不同的料層厚度進行了還原試驗，分析了所得鉬粉的粒度、氧含量和形貌，剖析了同舟內不同層次鉬粉的粒度和氧含量的變化規律。
  5. The results show that the penetrability of powder loads can be improved when suitably reducing bulk density and grain size of gun propellant, increasing nitrogen content of nc and choosing oblate spheroid explosive respectively under the constant test conditions

    結果表明，在其它試驗條件不變的條件下，適當降低發射藥堆積密度、適當提高發射藥中硝化棉（ nc ）含氮量、選用恆面燃燒的扁型藥、降低發射藥粒度均有利於提高射釘的穿透能力。
  6. Taken as materials, ammonium paramolybdate, molybdenum tri - oxide, molyb denum dioxide and molybdenum powder of different layers in thickness are reduced at different temperatures, and by analyzing the grain size, oxygen content and mo rphology of the molybdenum powders obtained, the effects of reduction processing on the grain size and oxygen content of the molybdenum powder of different layer s in the same boat are discussed

    以仲鉬酸銨、三氧化鉬、二氧化鉬和鉬粉為原料，採用不同的溫度和不同的料層厚度進行了還原試驗，分析了所得鉬粉的粒度、氧含量和形貌，剖析了同舟內不同層次鉬粉的粒度和氧含量的變化規律。
  7. The microwave magnetic sintering can not only lower the sintering temperature and shorten the sintering time, but also decrease the micro - grain size of magnets and make intergranular phase and grain boundary of main phase distributed well. the abnormal grain growth was found in conventional sintered ndfeb magnets, which may be due to the greater particle size and uneven distribution of powder, and higher sintering temperature and longer sintering time. of course, the abnormal grain growth would deteriorate the magnetic properties

    微波磁場燒結的不但降低燒結溫度，縮短燒結時間，而且使磁體整體加熱，受熱更均勻，因而磁體晶粒更細小，並且主相晶粒邊界趨于規則化，晶間相的分佈更均勻；在常規燒結的磁體中則出現了晶粒異常長大現象，造成這一現象的原因，一方面可能是燒結溫度過高或燒結時間過長，另一方面可能是磨製的粉體均勻性較差，存在的大顆粒被許多細小顆粒包圍，在燒結過程中，大顆粒不斷吞併小顆粒，逐漸長大，而異常長大的晶粒自然會導致磁體性能的惡化。
  8. And pbo single crystal nanowire was successfully prepared with new method. the results show that the amorphous matrix of the powders almost completely transforms into crystalline perovskite phase after 600 calcinations. the mean grain size in pt / tb powder is about 23nm that is smaller than that of pt powders

    鈣鈦礦相的晶軸比c / a比未摻tb的pt粉末低，具有贗立方結構的特性，降低了從立方相向這種四方相轉化的勢壘，從而有效地抑制了較高溫下焦綠石相的產生。
  9. Fine ni3al powders with an average grain size of 6. 1 m were firstly prepared by shs method and mechanical grinding for 36ks with the ratio of ball to powder at 3. 5. the effects of grinding condition and heat treatment technique on the morphology, microstructure and composition as well as crystal structure of the prepared ni3al powders were discussed

    首先採用機械粉碎法在36ks的粉碎時間和球料比為3 . 5的工藝條件下獲得了平均粒度為6 . 1 m左右的ni _ 3al微粉，重點討論了粉碎條件及熱處理工藝對ni _ 3al微粉的形貌、微觀結構、物相組成和晶體結構等的影響。
  10. Result of numerical simulation analyses powder grain size influence to velocity and temperature of flame, repeat with different grain size parameter simulation calculate, it has important meaning to accelerate and heat performance of spraying powder

    根據數值模擬結果分析了粉末粒度對火焰焰流速度和溫度的影響，用不同粒度參數重復模擬計算，這對噴塗粉末的加速和加熱性能具有重要意義。
  11. Revolved round the sun by the test and adjusted to the best working state compared with rotational speed of the autobiography, according to different supplies grain size, different supplies performance, can in short time ( 1 ~ 5 hours ) process the supplies into the ultra thin powder inside ( 1 ~ 5 micron )

    （三）經試驗公轉與自傳轉速比調整到最佳工作狀態，根據不同物料粒度、各異的物料性能，能在較短時間（ 1 ~ 5小時）內把物料加工成超細粉（ 1 ~ 5微米） 。
  12. Rotary cutters need no screen, but produce consistent grain size, low powder contain

    滾齒刀具無需篩板，粉碎顆粒度均勻，粉塵含量極少。
  13. Experimental results show that the grains were gradually triturated to namometer size with milling time and the grain size might be 30nm or so, but the grain size was not decreasing after the powder has been milled for 25 hours. the nano - sized sic was synthesized by ball milling of si and c mixed powders which rare earths as a additive was added to

    結果表明：隨著時間的延長，粉末逐漸細化至納米級，可以細化到30nm左右，但球磨時間超過25h后粉末顆粒繼續細化的速度明顯放慢，並且在球磨的過程因為晶粒細化和晶粒內部發生了嚴重的晶格畸變，納米粉體x射線衍射峰產生嚴重寬化。
  14. To characterize the particle size of the srce03 products, some methods used to determine the crystalline grain size and crystal lattice distortion rate of nanostructured powder based on xrd data were studied. it was found that some methods had their shortage. to rationalize the calculation, a proper treating method was recommended

    為了表徵所制備的納米srceo3粉體的粒度，本論文對利用粉晶x射線衍射技術表徵納米粒于的粒度和晶格畸變的方法進行了研究，發現已有的某些方法中存在的不合理性，針對表徵方法的合理化提出了自己的見解。
  15. The contrast experiment of chemistry reducing process and hydrothermal treatment were studied. the results showed that the crystallinity of copper powders prepared by hydrothermal method clearly increased, and the grain size distribution became narrow comparing with the copper powder prepared by reducing process

    通過化學還原法與水熱法制備銅粉的初步對比試驗，證明水熱處理過的銅粉粒度分佈變窄，結晶度提高，從而具備了還原法所不能比擬的優良性能。
  16. Method of the test for grain size distributionof continuous casting mold powder

    連鑄保護渣粒度分佈試驗方法
  17. Cr particles were enclosed by cr - w solid solution alloy after cr powder and w powder were sintered if the grain size of cr powder is larger than w powder. around cr particles more cr - w solute was formed with prolonging sintering time. during infiltration process, cr was dissolved and moved into the pores in w skeleton by cu liquids and made w skeleton become w - cr skeleton

    粒度較大的cr粉和粒度較小的w粉混合燒結后，形成crw固溶體合金包圍cr塊的組織形貌，燒結時間越長， cr塊周圍形成的crw固溶體越多；熔滲過程中， cr被cu液溶解並轉移到w骨架之間的孔隙中， w骨架則轉變為cr - w骨架。
  18. The test results show that : 1. under giving conditions, two explosives with the same atomic number ratio have similar combustion performances, 2. the pressed charge and the powder charge shows observably different combustion characteristics, 3. within 211. 7 m - 635. 0 m, decreasing the grain size may enhance combustion velocity

    通過對測試結果的分析表明，在特定條件下具有相同原子組成比例的炸藥，其燃燒性能相近；同種炸藥的藥柱和藥粉燃燒性能差異較大；在211 . 7 635 . 0 m范圍內， hmx 、 rdx顆粒越細，燃燒越快。
  19. Crystal structure and ceramoc microstructure of powder samples are examined by xrd and tem. the mean grain size of the materials ranges from 10nm to 50nm by controlling the reaction concentration and annealing temperature

    採用化學沉澱法成功地制備了納米晶zno粉體，根據不同反應物濃度和熱處理溫度的選取，晶粒尺寸控制在10 ? 50nm范圍內。
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