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  wax pattern
     Methods Crystals (NH 4Cl,NaCl and KMnP 4) with different shapes (globose, rectangular, cubical),different granularitis(the diameter of 0 1,0 2, and 0 3 mm)and different proportions (the respective content of crystal in which was 30%,50%, and 80%) were chosen. After wax pattern was shaped,routinely imbedded ,casted and fused ,the drawing strength ,the cut strength,and the pressing strength were tested.
     方法 :采用不同形态 (球形、长方体、立方体 )、不同粒度 (直径 0 .1、 0 .2和 0 .3mm)、不同比例晶体含量在 30 %、 5 0 %和 80 %的晶体盐 (NH4 Cl,Na Cl和 KMn P4 ) ,制作蜡型常规包埋铸造合金烤瓷后 ,测试金属烤瓷合金抗拉强度、剪切强度、抗压强度。
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     Methods: Divide 80 standard model into 4 groups, and carve wax pattern with different curvature radius.
     方法:采用80个上颌第一磨牙缺失的标准模型,平均分为4组,分别雕刻具有不同连接区曲率半径的蜡型
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     3. Investing the wax patternEach wax pattern was invested within 1 hour.
     1.3 蜡型包埋
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     Objective: To observe and compare the effect of three different kinds of wax pattern investing method.
     目的:观察比较3种不同蜡型包埋方法的效果。
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     METHODS: By the CNC laser scan system, the wax pattern of full crown was scanned and the 3D shape was retrieved in the computer.
     方法 :用CNC镭射扫描系统 ,将全冠的蜡型进行扫描 ,在计算机中形成全冠的三维图像 .
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  “蜡型”译为未确定词的双语例句
     Forty piece-shaped wax patterns with the dimension of 15mm×12 mm×1mm were made. Sprue was put on the side of 15mm×12 mm, and the other side was the adhesive surface.
     用蜡刀在1mm厚红蜡片上切下15mm×12mm的矩形片状蜡型40个,一面安插铸道,另一面作粘接面;
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     Application of PLC In Auto-wax pattern Machine
     PLC在自动压蜡型机上的应用
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     The wax patterns are 12. 90mm in diameter and respective 4mm, 6mm, 8mm in height and in 1mm thickness. Each condition is 96 wax patterns. Wax patterns were then cleaned with a surfactant.
     制作内径相同为12.90mm,外冠高分别为4mm、6mm、8mm,壁厚为1mm的蜡型各96个,然后安插铸道。
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     Methods: Thirty complete crown wax patterns made with a brass die were divided randomly into 5 groups(a,b,c,d,e).
     方法:用铜制全冠代型模具制作30个全冠蜡型,随机分成a、b、c、d和e共5组,e组作为对照组,用TitavestCB包埋材料一次性包埋。
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     There was no significant difference between the third group and the fourth group(P>0.05).
     第三组松风嵌体蜡制作的熔模蜡型与第四组熔模蜡型间无显著性差异(P>0.05)。
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  相似匹配句对
     3. Investing the wax patternWax patterns were divided 24 groups according to different factors.
     3.包埋
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     (2)C shape;
     C ;
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     (3)D shape.
     D
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     2) Fulgoroid type;
     ②(Fulgoroidtype);
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     velutina, F.
     velutina、黑白F.
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  wax pattern
The high costs and long lead-time associated with the development of hard tooling for wax pattern moulding renders IC uneconomical for low-volume production.
      
An attempt was done to prevent the contamination of cast Ti by using a wax pattern coating technique.
      
A standardized wax pattern for a five-unit bridge was used.
      
The dimensions of the die tooling, wax pattern, and casting were measured, in order to determine the actual tooling allowances.
      
A wax pattern was built up onto two Multi-Unit gold cylinders.
      
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From 32 rhesus monkeys the vermis cerebelli and the portion containing the dentate nucleus were fixed in 10% formalin.The animals of both sexes were divided into 4 age groups according to their dental status.Paraffin sections as well as frozen sections were prepared.The Purkinje cells per unit area of the cortex were estimated on sec- tions stained with methyl green and pyronin.With advancing of age the numbers of the Purkinje cells decreased gradually,with an average reduction from 1391 to 1065 in the males...

From 32 rhesus monkeys the vermis cerebelli and the portion containing the dentate nucleus were fixed in 10% formalin.The animals of both sexes were divided into 4 age groups according to their dental status.Paraffin sections as well as frozen sections were prepared.The Purkinje cells per unit area of the cortex were estimated on sec- tions stained with methyl green and pyronin.With advancing of age the numbers of the Purkinje cells decreased gradually,with an average reduction from 1391 to 1065 in the males and from 1203 to 1108 in the females.Histochemically the lipofuscin pigments differed from melanin and hemosiderin.They were almost insoluble in fat solvents,readily stained by Sudan black B,and were PAS-positive.The pigments in group Ⅳ usually appeared acidfast with the long Ziehl-Neelsen method,while those in the younger age groups were stained poorly or not at all.With Schmorl's ferricyanide method,only the pigments in the Purkinje cells of group Ⅳ reacted positively.Theese characteristics indicated that the pigments belonged to the ceroid-type lipofuscin as des- cribed by Pearse (1960).The magnitude of the pigments in both types of cells was es- timated in the Sudan black B-stained sections.In both sexes the numbers of pigmented cells and the cells with higher grades of pigmentation were found to be increased con- comitantly with the increase of age.The difference were statistically significant.The pigments of Purkinje cells were more or less uniform in size and accumulated lateral to or above the nuclei.The pigments in the neurons of dentate nucleus varied in size and distribution in the cytoplasm.In both types of the cells pigments were found occasion- ally in the dendrites.

用狝猴32只,分雌雄两批,按齿序情况分为4个年龄组。取小脑蚓体及含齿状核的部分,用10%福尔马林固定,作石蜡切片及少量冰冻切片。在甲绿(口派)啷咛染色的切片止, 计算了蚓体局部皮质内单位面积上的浦肯野细胞的数量,随年龄增加浦肯野细胞数递减。在雄性平均值由1391减至1065,在雌性由1203减至1108。用组织化学方法证明齿状核神经元及浦肯野细胞内的色素不是黑素或含铁血黄素,几乎不被脂溶剂溶解,易染苏丹黑,PAS反应阳性。用Ziehl-Neelsen长法染色第Ⅳ年龄组普遍有抗酸性,低年龄组反应较弱,成为阴性。对Schmorl氏铁氰化物,仅第Ⅳ组浦肯野细胞内色素呈阳性反应。这些性质表明色素为Pearse所描述的类蜡型脂褐素。在苏丹黑染色切片上,将两类细胞的脂褐素含量分别确定等极,计算了各年龄组内含各级色素的细胞所占百分数。在雌雄两性,含色素的细胞数,及色素合量高的细胞数,均随年龄增进而加多。这些数据经统计学分析,证明差异显著。在浦肯野细胞内色素大致均匀,分布多集中于胞核两侧或上端;在齿状核细胞内色素大小与分布很不一致,两类细胞中均可偶见分布到树突中的色素。

The purpose of this study is to evaluate the fitness of three-unit FPD framework inone-piece casting made of CW-PA(Ni-Cr-Nb)alloy and invested with HCVEST(?)invest-ment,in comparison of casting ring investing method with ringless method and wax pat-terns invested immediately with those of 24 hours storage time.The specimens were divi-ded into 4 groups.28 castings were made for the experiment.The following conclusions from the results were drawn,No significant difference wasfound in dimensional changes between...

The purpose of this study is to evaluate the fitness of three-unit FPD framework inone-piece casting made of CW-PA(Ni-Cr-Nb)alloy and invested with HCVEST(?)invest-ment,in comparison of casting ring investing method with ringless method and wax pat-terns invested immediately with those of 24 hours storage time.The specimens were divi-ded into 4 groups.28 castings were made for the experiment.The following conclusions from the results were drawn,No significant difference wasfound in dimensional changes between casts invested with either ring or ringless method.There was a little significant difference in dimensional changes on some sections betweencasts from wax pattern invested immediately and stored for 24 hours.None of casts exhi-bits an ideal fitness and complete seating.Unavoidable distortion of the cast exists.Thediscrepancy greatly attributes to the irregular shape of FPD.

采用 CW—PA(Ni-Cr-Nb)烤瓷合金和 HCAEST(?)磷酸盐结合系包埋料,比较有圈包埋与无圈包埋两种包埋方法和蜡型立即包埋与存放24小时后包埋两种蜡型存放时间,考察三单位金属烤瓷固定桥整铸支架的适合性。结果,在本实验条件下,使用非贵金属烤瓷合金制作的整铸固定桥适合性较差;有圈包埋与无圈包埋之间无统计差异;蜡型不存放与存放24小时之间基本无统计差异;表明铸件的变形是不可避免的,这与固定桥的特殊形状有密切关系。

At least two visits are required to fit conventionally fabricated porcelain and composite resin inlays. The optical scanning methods and computer-aided inlay fabrication techniques have been used in attempts to eliminate the currently practiced impression, die, waxup technique. Using optical scanning and CAD ?CAM technique, the Cerec system enable the restoration. to be milled from a premanufactured ceramic block. The excellent color ceramic restorations can be fabricated and placed immediately by dentists after...

At least two visits are required to fit conventionally fabricated porcelain and composite resin inlays. The optical scanning methods and computer-aided inlay fabrication techniques have been used in attempts to eliminate the currently practiced impression, die, waxup technique. Using optical scanning and CAD ?CAM technique, the Cerec system enable the restoration. to be milled from a premanufactured ceramic block. The excellent color ceramic restorations can be fabricated and placed immediately by dentists after the tooth be prepared. This not only raises working efficiency , but it is more important to improve the quality of restoration. Cerce-milled restorations are suited to inlays and onlays. Veneer laminates are also fabricated by the same system. The purpose of this paper is to introduce and describe the step by step fabrication of a ceramic restoration using the Cerec system,and explore certain problems about clinical application.

在临床修复中,传统的瓷嵌体等修复体的制作,至少需要二次就诊时间。随着光学扫描方法和计算机辅助制作嵌体技术的应用,省去了目前操作的印模、灌模、蜡型等技术。CEREC系统运用光学印模方法以及CAD—CAM技术,将一预成陶瓷块铣磨成修复体,使牙科医生能在牙体预备后立即制作一个色泽自然的陶瓷修复体,并即时粘固于预备牙上,这不仅提高了工作效率,更重要的是提高了修复体的质量。该系统不仅可以制作嵌体和高嵌体,而且还可制作各种贴面。本文的目的是介绍和描述CEREC系统制作瓷修复体的方法步骤,并就临床应用中的有关问题加以探讨。

 
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