重紋孔 的英文怎麼說

中文拼音 [zhòngwénkǒng]
重紋孔 英文
bordered pit
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 紋 : 名詞（花紋; 紋縷兒） lines; veins; grain
  1. Abstract : fingerprint technology is an important part of computer software encipher, this paper presents the principles and methods to make and discriminate the laser hole fingerprint, the weak region fingerprint and the short sector fingerprint

    文摘:指紋技術是計算機加密技術的一個重要組成部分，文中詳細論述了激光孔指紋、弱位法指紋及短扇區指紋的原理、製作與識別的方法。
  2. The colpal membrane is nearly smooth but with granular, spinulose or tuberculate protuberances. the pollen grains show great variations between the genera in the tribe hyoscyameae in terms of the presence or absence of the germination aperture and its type, and the exine ornamentation, and thus can be used as important characters in the consideration of the phylogenetic relationship of this tribe

    各屬植物的花粉形態在萌發孔的有無、萌發孔的類型和外壁紋飾等方面有較大的差異，可以作為探討屬間分類和系統關系的重要依據c天仙子族植物花粉萌發孔的演化趨勢為：無萌發孔一3 、 4溝一3孔溝。
  3. As an important step, the roll groove design - the selection of the roll groove system and the determination of the dimension, makes the decisive effect on the dimensional accuracy and the mechanic character of the tread steel bar

    孔型設計作為螺紋鋼筋生產中的重要環節，對螺紋鋼筋尺寸精度的高低起著決定性作用，孔型系統的選擇及孔型尺寸的確定直接影響到成品鋼筋的尺寸精度及其機械性能。
  4. Designing with this card system can shorten the design cycle of the new product, lowering the consumptions of the mills and the production cost, advancing the dimensional accuracy and the mechanical character of the finished thread steel bar. it has the important significance for increasing the economic benefit of the enterprise

    採用本螺紋鋼card系統進行孔型設計，極大地縮短了新產品的設計周期，降低了軋機能耗和生產成本，提高了螺紋鋼筋成品的尺寸精度和機械性能，對增加企業經濟效益具有重要意義。
  5. This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and

    本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是：根據光學玻璃的物理與化學性能，選擇輕型鏡坯材料；用有限元法對鏡子的變形進行分析、計算，找出變形規律，優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構；分析玻璃切削原理，設計專用磨輪結構，選擇合理工藝技術參數，完成400mm平面鏡輕量化減重孔的加工；分析氫氟酸腐蝕光學玻璃機理，尋找最佳酸濃度、腐蝕作用時間等工藝參數，實現400mm平面鏡減重孔應力與微裂紋的消除；討論分離器加工原理和工藝技術特點，完成400mm平面輕型鏡面形加工。
  6. Wallet with retractable id sleeve, id slot with monofilament window, internal key holder slot, three horizontal and three vertical card slots, extra storage slot, bill compartment with divider, quilted accent with heavy - gauge thread on exterior leather, embroidered icon, and metal bar logo accent

    錢包與可撤回的身份證袖子，身份證槽孔與單絲窗口，內部關鍵囤戶槽孔，三個水平和三個垂直的卡片槽，額外存貯槽孔，票據隔間以分切器，縫制了口音與重測量螺紋在外部皮革、被繡的像，和金屬棒商標口音。
  7. After 20 days at 450 or 1 day at 500, the u3si2 particles cracked and fragmented, there were a lot of cracks in al - matrix and reacted areas, there were also a lot of holes in the meat. the meat lost its continuity and perfection, and departed from clad. above 450 the volume fraction of the al - matrix and the u3si2 decreased and produced u ( al, si ) 3 in the meat, u3si2 particles invaded to clad

    在450熱循環20天後、 500熱循環1天後，燃料板的厚度變化一般0 . 04mm ，燃料板的翹曲現象嚴重； u _ 3si _ 2顆粒開裂及破碎，基體中產生大量的裂縫，反應層也存在大量的裂紋及孔洞，芯體已失去連續性、完整性，並且與包殼脫開。
  8. 12. bubinga : origin of southern mexico. wooden features : density 0. 80 - 0. 86g cm3 ; heavy timber, casual porous wood, heart and sapwood about the distinction between obvious ; wood shiny, and no special smell, texture staggered, heavy, tough, tenacious, wearable ; structure and detailed and uniform ; not cracking and warping. anti - termite hazard

    木材特徵：氣干密度0 . 80 - 0 . 86g cm3木材重，散孔材，心邊材區分明顯木材有光澤，無特殊氣味，紋理交錯，重硬堅韌，耐磨結構細而均勻不易開裂，翹曲。
  9. Any severe deficiency of welding seams surface like cracks, pores, slags is forbidden

    焊縫表面不得有裂紋，氣孔，夾渣等嚴重缺陷
  10. It is very important to study the correlation of cyclical strain on the side of hole with fatigue life cycle for understanding the material damage and micro - crack initiation, and for preventing macro - crack initiation and propagation

    研究孔邊循環應變與疲勞循環次數的相關性，對于研究材料損傷及微裂紋的產生，預防宏觀裂紋的產生及擴展具有十分重要的意義。
  11. The new type perforted corrugated packing won the second of the national science and technology advance prize in 1992. it won the golden medal of the second national exposition on the new patent techniques and products in 1993. besides, it was listed in 95 the most important expanded items of national technical committee

    新型網孔波紋填料1992年獲國家級科技進步二等獎1993年獲第二屆中國專利新技術新產品博覽會金獎列入國家科委九五重點推廣計劃「金屬空分波紋填料」已通過省級科技鑒定並被認定為高新技術產品空氣分離塔入選為「中華塔器品牌榜」產品。
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