建立了三圆弧螺旋槽径向截形的数学模型。
The mathematical model of the flute radial cross section with three pieces of arcs has b…
建立了三圆弧螺旋槽径向截形的数学模型。
The mathematical model of the flute radial cross section with three pieces of arcs…
基生叶长圆形或椭圆形，截形或楔形在基部。
Basal leaf blade oblong or elliptic, truncate or cuneate at base.
横向截形是麻花钻螺旋面容屑槽的一个特征参数。
Drill cross section profile (DCSP) is a characteristic parameter of drill helix flute form.
采用二次回归通用设计的方法，对雄性截形叶螨生长发育进行了研究。
Under auto_controlled temperature and light length in small rooms, using the way of twice regression general design, growing of male_ Tetrangchus truncatus Ehara was studied.
本文利用螺旋面理论。结合计算几何知识，根据-麻花钻实物求出了加工该工件用的二次圆盘刀具截形。
On the basis of helicoid theory and computational geometry, the sectional contours of a sample twist drill were found for producing similar twis1t drills.
进行异型螺杆磨削时，除了要求机床实现螺旋运动之外，还需要适时进行砂轮截形的计算，并按所计算截形进行砂轮的修整。
For grinding special_shaped screws, in addition to helical movement on machine, it also needs calculation on grinding wheel section, and to dress the wheel based on the calculation.
结果表明：在直槽或螺旋槽、零前角或正前角等情况下，用本文设计的磨轮铲磨的滚刀，其基本蜗杆轴截形在从新到旧的整个使用过程中都是精确的。
The following conclusion is obtained. In the cases of straight gash, spiral gash, zero rake angle and positive rake angle, the hob worm profile from hob put into use to hob abandoned i…
本文研究了加工经可控曲率修正的蜗轮齿面的滚刀设计问题，建立了相应的数学模型，并应用计算铲磨蜗轮滚刀刃形曲线的单参数包络法，求出铲磨砂轮截形曲线。
This paper studies the relief grinding problem of the hob of point contact worm gear drive and puts forward a one-parameter enveloping method to calculate the axial profile of relief grinding wheel.
他将一块玻璃、一片面包和一截黄瓜摆放成一个三角形，玻璃表示攻击目标。
He positioned a glass and a piece of bread and a cucumber in a triangle. The glass represented the target.
所得结论对于改进刀形截齿的设计，进一步提高其截割性能和截割效率有一定的指导作用。
The obtained got conclusions may be used to improve the design of the pick, enhance further the cutting performance and benefit the pick.
介绍了镐形齿的几何形状、材料、工艺及截齿的配置等情况，并对其可靠性及寿命进行了分析。
The geometry, material, processing and arrangement of pick are introduced, and the reliability and the life are analyzed.
根据煤岩体的抗压强度，给出了镐形截齿破煤过程中截割力的计算公式。
According to the compressive strength of coal rock mass, the paper provided the calculation formula of the pick cutting force during the coal cutting operation.
分析了梳棉截切形盖板针布的挂花原因，并提出了预防措施。
The article analysed the cause of winding cotton of cards flat card clothing and put forward a few preventive measures.
枕状构造是砂层中一组呈“凹”形弯曲的变形沉积体，它的原始层平行于枕状体的底面，顶面则是一个平直的截切面。
Pillow structure consists of a suit of deformed concave upward bodies made of silt and sand whose original layering bent round parallel the basal surface and it truncated at the top surface.
方法采用V形或经椎弓根椎体截骨术、椎体部分或整体切除术治疗脊柱后凸畸形2 6例。
Methods Various operation types were used to treat 26 cases of kyphosis respectively, including V shaped or transpedicle spinal osteotomy, subtotal or total spinal osteotomy.
飘波的出现会导致用三角法测量板形时出现误差，而新型截光法板形仪可减轻或消除此误差。
The occurrence of the flying wave can lead to the error in shape control by shape meter using laser triangle method, but the error can be decreased or eliminated by laser capture method.
叶对生，长圆状戟形至三角状披针形，长2-3.5厘米，宽0.5-1.5厘米，顶端锐尖，基部近心形或截平；侧脉每边约5条；叶柄长约1厘米。
Leaves opposite, oblong-hastate to triangular-lanceolate, 2-3.5 cm long and0.5-1.5 cm wide, apex acute, base subcordate or truncate; petioles1 cm.
叶对生，长圆状戟形至三角状披针形，长2-3.5厘米，宽0.5-1.5厘米，顶端锐尖，基部近心形或截平；侧脉每边约5条；叶柄长约1厘米。
Leaves opposite, oblong-hastate to triangular-lanceolate, 2-3.5 cm long and0.5-1.5 cm wide, apex acute, base subcordate or truncate; petioles1 cm.
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