齿形

Couplings include: diaphragm coupling, tire coupling Roller Chain Couplings Diaphragm Couplings drum gear coupling plum-shaped flexible coupling flexible set of dowel pin coupling star flexible coupling elastic dowel pin dowel pin coupling flexible coupling teeth Rigid Couplings Safety Couplings slider coupling universal coupling, etc.; synchronous round types, including circular gear (3m, 5m, 8m) and trapezoidal tooth series, the company can also custom-made by a variety of clients sprocket , gear.

联轴器包括：膜片联轴器，轮胎式联轴器滚子链联轴器膜片联轴器鼓型齿式联轴器梅花形弹性联轴器弹性套柱销联轴器星形弹性联轴器弹性柱销联轴器弹性柱销齿式联轴器刚性联轴器滑块联轴器安全联轴器万向联轴器等；同步轮种类包括圆弧齿（3m、5m、8m）和梯形齿系列，公司还可按客户定做各种链轮、齿轮。

The main work of this paper includes:① The calculation of the structure parameters and 3D modeling in I-DEAS of the crown gear coupling are carried on.

本文的主要研究内容有：①对鼓形齿联轴器进行结构尺寸设计计算，应用I-DEAS 软件对鼓形齿联轴器进行三维实体造型。

The aim of the subject is to design and check the strength of the gears of crown gear coupling from the Beijing subway and to analyse the teeth by means of 3D FE elastic contact method. The result can numerically and theoretical support the design and manufacture of crown gear coupling.

本课题研究的目的是通过对北京地铁联轴器齿轮副进行强度设计和校核，并且对其进行三维弹性接触有限元分析，得出鼓形齿联轴器齿轮副的弹性接触状况，为鼓形齿联轴器的设计及制造提供数据和理论支持。

Selection of drum gear coupling tooth gear coupling, gear coupling crown gear axis to allow the two larger angular displacement, load-bearing capacity is relatively strong, and easy to install and adjust.

齿轮联轴器选用鼓形齿齿轮联轴器，鼓形齿齿轮联轴器允许两轴线有较大角位移，相对承载能力较强，并且易于安装调整。

Based on the meshing theory,The reason produced by the theoretic edge shape error of slotting tool is dis-cussed in detail in this paper.

以啮合理论为基础，详细分析了插齿刀理论刃形误差产生的原因，提出了插齿刀理论刃形误差修正的方法和计算结果。

Valves triangular-cordate, apex acute, base subcordate, margin denticulate; denticles 1-1.5 mm.

裂爿三角形心形，先端锐尖，基部近心形，边缘具小齿；小齿1-1.5毫米 19 R 。

Based on the analysis,advance a method of designing and processing modification spiral bevel gear and design a new type of cutter are put forward.By the local synthesis method,the mesh quality of the modification spiral bevel is researched.

在此基础上，提出了一种修形弧齿锥齿轮的设计加工方法，并设计了新型加工刀具，此外，还借助于局部综合法，研究了修形弧齿锥齿轮的啮合质量。

Combined with additional sequences of 20 bivalves and 6 gastropods downloaded from NCBI (National Center of Biological Institution), molecular phylogenetic trees were constructed using 4 Polyplacophora species as outgroup. The result resolved by maximum-parsimony, maximum-likelihood and Bayes-induce methods were in congruent with each other, which indicated that all bivalves formed a monophyletic group clustering with its sister-group, Gastropod.

结果显示：所有双壳纲的种类构成了单系发生的进化枝，与其姐妹群腹足纲聚在一起；双壳纲可以分为异齿亚纲和翼形亚纲两大类群，异齿亚纲是单系发生，翼形亚纲的系统发生关系则随方法的不同有所区别，牡蛎科的位置是造成此差异的主要因素。

Spikelets laterally compressed, lanceolate-oblong, florets several, contiguous; rachilla scaberulous, disarticulating above glumes and between florets; glumes slightly unequal, upper nearly as long as spikelet, firmly membranous, keel scaberulous, apex abruptly acuminate, lower glume 1–3-veined, upper glume 3–5-veined; lemmas broadly lanceolate, thinly leathery, rounded on back, 5–7-veined, veins smooth, not raised, scabrid above middle, apex scarious, usually 3-denticulate, sometimes mucronate; floret callus subacute, bearded laterally with stiff hairs; palea subequal to lemma, narrow, flat, apex sharply 2-denticulate.

小穗侧面压扁，披针形长圆形，小花数个，邻接；小穗轴高于颖片微糙，脱节和在小花之间；颖片稍不等长，上面近等长小穗，坚定膜质，龙骨状，先端突然渐尖，下部颖片1-3，上面颖片3-5－脉；宽披针形的外稃，在背面上薄革质，圆形，5-7－脉，平滑的脉，不凸起，在中部以上，先端，通常3－具小齿，小花结茧稍尖，用硬的头发侧面公然反对；内稃近等长于外稃，缩小，平，顶明显2－具小齿。

Included are the measurements of the tooth profile deviation of a shaving cutter based on the generalized polar coordinate method, and of the helix deviation of the shaving cutter using curvature method to automatically identify the boundary points; the measurements of the tooth profile of a modified hobbing cutter, and of deviation of contact line of the hobbing cutter by means of the generalized cylindrical coordinate method; the measurement of the deviation of tooth profile of a non-linear worm .

这些测量包括：①基于广义极坐标法的剃齿刀齿廓误差测量，以及采用&曲率法&自动识别界点的剃齿刀螺旋线误差的测量；②修形滚刀的齿廓测量，以及基于广义圆柱坐标法的滚刀啮合误差的测量；③非线性蜗杆的齿廓误差测量。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新