precursor 中文意思是什麼

音標 [pri(:)'kə:sə]
precursor 解釋
n. 名詞 1. 前輩，前驅，先鋒；前任。
2. 預兆；先兆。
3. 預報器。
4. 【原子能】前驅波；初級粒子。

  1. The precursor can be free of drying by using acetone

    用丙酮擠水可免去真空乾燥。
  2. We hope that our study will provide us with more comprehensive knowledge of the mechanisms of immune regulation and the roles that dc and complement play in innate and acquired immunity, as well as to lay a foundation for further exploration of the roles dc play in antigen - specific immune responses and immune tolerance from a new perspective. part i expression of complement receptors and complement - associated molecules on dendritic cells derived from distinct - origin at different stages of development two subsets of dendritic cells were generated from precursor cells isolated by means of magnetic cell separation system

    曰補體受體及其相關分子在modc上的表達不同分化階段的單核細胞衍生性dc （ monocytes一deriveddc ， modc ）的誘導:將新鮮分離的單核細胞mo ，在含有gm一csf和工l一4培養體系中誘導5一7d ，即分化為未成熟modc ;對培養至sd的未成熟modc ，用tnfa刺激zd ，即分化為成熟modc ;此時再用lps刺激24h ，即為活化的modc 。
  3. Lysine is a precursor of certain alkaloids

    賴氨酸是某些生物堿的前體。
  4. Cyanide can serve as precursor for the amide nitrogen of asparagine.

    氰化物可以作一個天門冬酰胺的酰胺氮前體。
  5. They alter the way it cleaves amyloid precursor protein

    它們改變了這個酶切割澱粉樣蛋白前體的方式。
  6. L - arginine : this amino acid is a precursor to nitric oxide ( no )

    精氨酸：這種氨基酸是氮氧化物（ no ）的前身。
  7. Exogenously supplied aspartate is not an active precursor of asparagine in plant tissues.

    外來供給的天門冬氨酸，在植物組織中並不是一個活躍的天門冬酰胺前體。
  8. Crazing is the invariable precursor of brittle fracture.

    出現小裂紋必然是脆性斷裂的前兆。
  9. Effect of calcination conditions on phase assemblage of bi - 2212 precursor powders

    2212粉末的相組成影響
  10. Most dolomite is obviously the result of replacement of precursor calcite but certainly not all.

    多數白雲石顯然是原來方解石交代的結果，但肯定不是全部。
  11. These include the chlorophyll precursor protochlorophyllide a.

    這些受體包括葉綠素的前體原葉綠酸a。
  12. Preparation and characterization of pmn - pt relaxation ferroelectric powder by columbite precursor method

    弛豫鐵電體及其表徵
  13. Mas precursor powders were uniaxially pressed at 100 mpa employing a lubricated steel cylindrical mold. after sintering at 1450 for 2 hours, single - phase cordierite ceramic is prepared, and its relative density is 95. 1 %

    Mas先驅體粉末在100mpa的軸向壓力下成型后，經1450無壓燒結2小時，得到單相堇青石陶瓷，其緻密度達95 . 1 。
  14. Mas precursor powders are prepared using aluminium sulfate, colloidal silica, and magnesium nitrate as raw materials via sol - gel methods, dsc - tg and xrd show that the mas precursor powders transform to cordierite completely at 1300

    以硫酸鋁、硝酸鎂和硅溶膠為原料，採用溶膠-凝膠法，制得mas先驅體粉末， xrd表明，該粉末經1300的熱處理后，完全轉變為堇青石。
  15. Microstructures of licoo2 such as crystallite size, particle size and aggregate have some succession with those of precursor co3o4

    浙江大學碩士學位論文採用以非水介質作為分散劑的兩步溫度焙燒的lic 。
  16. Effect of precursor powder on microstructure and critical current density of - 2223 tapes

    銀超導帶材的顯微結構及臨界電流密度的影響
  17. Shanghai xinli battery manufacture co., ltd. to establish in 1994 lately, the precursor is shanghai xinli battery factory lately, the company takes making the alkaline battery alkaline as to predominate the product, various specification, species is basic to cover all serieses of the dry battery, and accept various combination battery of the not standard type of design, to satisfy customer " s demand. xinli battery company lately to have already passed iso - 14000 environment system attestations of iso - 9001 : 2000 international quantity system attestation, the product quantity passes the battery examination center examination of the national light industry bureau and the sgs measurement of the eu ros serieses, the product is qualified. company annually with pass to increase continuously, the extension exports outward and the superior economic specific value service of the underneath brand peony, hongdan, fengdian. etc

    上海新立電池製造有限公司成立於1994年，前身是上海新立電池廠，公司以製造堿性電池alkaline為主導產品，各種規格品種基本涵蓋干電池的所有系列，並承接設計非標準型的各種組合電池，以滿足客戶的需要。新立公司已通過iso 9001 - 2000國際質量體系認證和iso 14000環境體系認證，產品質量通過國家輕工業局電池檢測中心檢測以及歐盟ros系列的sgs測定，產品合格。公司每年以不斷遞增擴大對外出口和旗下品牌牡丹紅丹豐電等的最優經濟比值服務于廣大國內外客戶，並得到用戶的歡迎。
  18. As precursor to the present - day european union ( eu ), the ecsc ' s existence over the past half century has transformed europe and had a major impact upon the world

    歐洲煤鋼共同體為歐洲聯盟的前身，半個世紀以來，它的存在改變了歐洲，影響了世界。
  19. At the end of 1940s, wright ' s prot g, james baldwin, an american black ephebe, advanced an unrelenting criticism of naturalism by richard wright, the precursor in african american literary circle

    摘要20世紀40年代末，美國黑人作家詹姆斯?鮑德溫對他在文學創作上的引路人、當時美國黑人文學的代表人物賴特進行了猛烈攻擊，這一舉動符合布魯姆所說的文學發展進程中的「弒父」行為。
  20. Glycerate 3 - phosphate is a precursor of the amino acid serine

    甘油3 -磷酸是絲氨酸的前體。
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