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tooth breaking
相关语句
  断齿
     The Reason Analysis on Tooth Breaking for Bull Gear of Centrifugal Compressor
     离心压缩机大齿轮断齿的原因分析
短句来源
     Improvement and Analysis on Accidents of Tooth Breaking in the Transverse Moving Vehicle Modeled Made of Spain
     仿西班牙横移车断齿事故分析及改进
短句来源
     Detailed analysis is made of the reasons why fissures,peeling-off, and tooth breaking exist in the build-up welding layer of cast WC for hardening material of steel-toothed gear drills.
     在钢齿牙轮钻头强化材料中,详细地分析了铸造碳化钨堆焊层产生龟裂、脱落和断齿的原因。
短句来源
  “tooth breaking”译为未确定词的双语例句
     Causes and protectives for gear tooth breaking problems of a mining machine
     采矿机械齿轮断齿原因与预防
短句来源
     A Method to Avoid Tooth Breaking during Gearshift of Spindle Box
     介绍一种避免主轴箱换档打齿的方法
短句来源
  相似匹配句对
     Tooth
     牙齿
短句来源
     Reutilization of old crown of base tooth after its breaking
     烤瓷冠牙体折断后烤瓷冠的再利用
短句来源
     Analyzing tooth-breaking failure of a spiral bevel gear
     螺旋锥齿轮断齿失效分析
短句来源
     Breaking with fixed tradition
     打破固定传统
短句来源
     Silence and Silence-breaking
     沉默与打破沉默
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The present paper deals with a new genus and species, Bothriostylops notios of Arctostylopidae secured from the Late Paleocene Wangwu Member, Chijiang Formation in Jiangxi Province. "Sinostylops progressus" discovered from the Shuangtasi Group of the Early Eocene, Xuancheng Basin in Anhui Province is here assigned to Bothriostylops progressus based on its cheek tooth structure. A close relationship between Asiostylops found from the Late Paleocene Langnikeng Member of Chijiang Formation and the new form...

The present paper deals with a new genus and species, Bothriostylops notios of Arctostylopidae secured from the Late Paleocene Wangwu Member, Chijiang Formation in Jiangxi Province. "Sinostylops progressus" discovered from the Shuangtasi Group of the Early Eocene, Xuancheng Basin in Anhui Province is here assigned to Bothriostylops progressus based on its cheek tooth structure. A close relationship between Asiostylops found from the Late Paleocene Langnikeng Member of Chijiang Formation and the new form i also proposed. Notounguhta Roth, 1903 Arctostylopidae Schlosser, 1923 Bothriostylops gen. nov. Type species Bothriostylops notios sp. nov. Referred species Type species, B. progressus (=Sinostylops progressus Tang and Yah, 1976) and Bothriostyloos sp.. Age and distribution Late Paleocene to Early Eocene of South China. Diagnosis Lower jaw laterally compressed and slightly convex ventrally. Cheek tooth brachyodont with deep median external groove, convex external wall and developed cingula on anteroexternal margins. P_4 incipiently molariform with nearly crescentic talonid. Talonids longer than trigonids on molars with elongate crescentic lophids and simple but distinct entoconid crests. Bothriostylops notios sp. nov. Type A left lower jaw with P_4-M_3 (V 7642). Horizon and locality Late Paleocene Wangwu Member, Chijiang Formation. North of Zhulin Hill, Dayu County, Jiangxi. Diagnosis As for the genus. Description Mandible laterally compressed and slightly convex along ventral border, being 4.7, 5.5 and 4.6 mm. high below P_1, M_2 and M_3, respectively. Cheek tooth low crowned and arranging closely. Tooth crown convex externally with a deep median external groove. All premolars have not been preserved except P_4 which damaged an- teriorly. P_4 somewhat molariform, elongate anteroposteriorly, with robust metaconid and nearly crescentic talonid which is less than half of the trigonid in length. The talonids of the first two lower molars longer than the trigonids. The paraconid of M_1 lower positionaly, anterointeriorly to the high protoconid, and connected with the latter by a slightly bended crest; metaconid robust but damaged on the top; talonid lower than trigonid, its anterior wing of external crescent meeting the trigoaid near the midline rather than internal; entoconid lower, transverse crest broken. M_2 similar to M_1 in size and in trigunid morphology, entoconid higher than that on M_1, transverse crest slant rather than transverse. M_3 the biggest of the three lower molars, talonid two and half times as long as trigonid, hypoconulid extremely high and robust, forming a crest-shaped third lobe. Comparison Bothriostylops notios resembles Asiostylops and "Sinostylops progressus" in mandible and cheek tooth structure. It similar to Asiostylops in narrow lower jaw, nearly equal size of M_1 and M_2, convex external wall, deep median external groove and having rather developed anteroexternal cingulum, but different from the latter in relatively small P_4 with incipient crescentic talonid; short trigonid and long talonid as well as strong transverse crest on the lower molars. Above features indicate that Asiostylops is more primitive than Bothriostylops. The characters, such as convex external wall, deep median external groove, rather developed a nteroexternal cingulmn and high metaconid on the lower molats, also occurred in "Sinostylops progressus". However, the latter has higher crown, more molariform P_4 and stronger transverse entoconid crest on the molars than B. notios does, demonstrating tha "Sinostylops progressus" is more progressive. Bothriostylops sp. Material A left lower jaw with all the teeth broken except M_3 (V 7646). Horizon and locality As for Bothriostylops notios. Remarks M_3 on specimen No. V 7646 possesses large metaconid, compressed trigonid, high and robust hypoconulid and crested third lobe, demonstrating that it resembles that of B. notios and should be pertained to the same genus. But it differs from B. notios in having relatively longer mandibte. Discussion 1. On the systematic position of the species "Sinostylops progressus" Sinostylops was created by Tang and Yan in 1976. It originally contained two species-S. promissus and "S." progressus. The former was found from the Late Paleocene, Upper Member of Doumu Formation, Qianshan Basin, Anhui and the latter from the Early Eocene Shuangtasi Group. With a careful observation on the materials of the above two species, we feel strongly that it is hard to place them to one genus. The type species (S. promissus) has only one lower jaw with cheek teeth broken lingually and much worn crown surface. All can be seen are the flat and steep external walls, weak anteroexternal cingulum and straight ventral border of the horizontal ramus. Nevertheless, they reveal that S. promissus is very different from "Sinostylops progressus" which is here removed to Bothriostylops progressus. As B. progressus has lower molars with high metaconid, deep median external groove and convex external wall, which resemble those of B. notios, it is pertained to the genus Bothriostylops reasonably. These common features together with the differences between the two species mentioned above indicate they have not only close relationship but also different evolutional level .B. progressus seems to be the descendant of B. notios. Both species share many similar characters with Asiostylops and are related to the latter rather than Sinostylops or other Arctostylopids as previously thought. 2 The age of the Wangwu Member In Wangwu Member of Chijiang Formation were found mammalian fossils, including three species previously described. Archaeolambda sp. is the common member of Late Paleocene to Early Eocene age in Asia. Allostylops periconotus Zheng seems to be closely similar in morphology to those of Arctostylopids known from the Late Paleocene or the Early Eocene Gashato Formation and Naomugen Formation in spite of that the latter forms are more specialized. Jiangxia chaotoensis Zhang et al. appears to be more primitive than those of the Eocene species, As mentioned above, B. notios is a transitional form between Asiostylops (Late Paleocene age, found below B. notios in the same section) and B. progressus (early Early Eocene) in the evolution. So it is natural that the discovery of B. notios further strengthens the opinion that Wangwu Member is of late Late Paleocene in age.

本文主要记述了南方有蹄目北柱兽科一新属新种——南方沟柱兽 (Bothriostylops notios gen. et sp. nov.).化石发现于江西池江盆地晚古新世池江组.新属牙齿形态与其他已记述的北柱兽科种类均有一定的差别,但与稀少亚洲柱兽 (Asiostylops spanios) 和原"中华柱兽"进步种 ("Sinostylops" progressus) 在系统关系上比较密切.本文初步讨论了"中华柱兽"属中有关种的分类和归属问题.

Symmetric Gear Reducers from F. L. Smidth are famous for their impact structure, operation reliability, long service life and high efficiency. Therefore many sets are imported in recent years. But due to the improper erection and operation, breakdowns such as shaft cracking, tooth breaking, corrosive pitting, teeth ring fracture, etc. often take place. This article introduces some experience of the author.

丹麦史密斯公司的对称齿轮式减速机以其结构紧凑,运行可靠,寿命长,效率高著称,近年来引进较多。但因安装使用不当,有些产生了断轴,断齿,点蚀,断齿圈等故障,作者对此介绍了一些经验和休会。

In this paper the automatically monitoring of tooth-break during automotive gearbox tests is presented,the principle of alarm annunciator and some main points of circuit testing are described as well.

介绍了在汽车变速器试验过程中,齿轮断齿的自动检测和报警原理及线路调试要点.

 
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