齿顶圆

On the test machine of glue,using three groups of 45 steel-40Cr disc test examples with clifferent hardness, the gear abrasion simulant experiment has been done about addendum, dedendum dividing point of single and double engagemenf area.

用三组不同硬度的45钢-40Cr的圆盘试件，在圆盘滚子实验机上，对渐开线齿轮的齿顶、齿根、单双齿啮合分界点四点进行齿轮磨损的模拟实验。分析了材料副的硬度和配对试件的绝对滑差速度对磨损的影响。

Basal petioles 1.5–5 cm, sheaths long, broad; blade oblong, 2–4 × 1–2 cm, pinnate; pinnae sessile,(3–) 4–6 pairs, remote; ultimate segments long-ovate to suborbicular, 5–10 × 3–8 mm, base subtruncate or rounded, entire or apex shallowly 1–3-toothed, sometimes 3–4-crenate; terminal pinnae obovate or orbicular, base cuneate, apex more deeply 3-lobed.

基部的叶柄1.5-5厘米，鞘长，宽；叶片长圆形， 2-4 * 1-2 厘米，羽状；羽片无柄，(3-)4-6 对，遥远；末回裂片长卵形到近圆形， 5-10 * 3-8 毫米，基部近截形或圆形，有时，浅全缘或先端1-3齿状具圆齿；更深的顶生的羽片倒卵形的或圆形，基部楔形，先端3浅裂。

The distribution of the principal stress fields in the rock beneth the circle cutter、 wedge cuter and worn wedge cutter were calculated using the finite element methods.

论文在后半部分采用有限元方法计算了圆齿、尖顶楔形齿、圆弧冠顶楔形齿压入平井底面和齿槽井底面的应力场分布。

The result indicates that the diameter of escape wheel addendum, center distance of escape wheel and pendulum have their significant influence on the timing of clock mechanism.

结果表明，擒纵轮齿顶圆直径与擒纵轮轴与摆轴中心距对钟表机构计时的散布影响较大。

This method changes the interference analysis between gear shaper root circle and non-circular gear tip curve in manufacturing non-circular gear which is similar to that of a cylindric...

提出通过改变插齿刀的基本参数来避免干涉的方法，这种方法既可以避免刀具的齿根与非圆齿轮的齿顶的干涉，又不会引起其它的干涉现象产生，是解决非圆齿轮加工中产生干涉问题的有效方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。