圆周的

This article mainly carries on reconsidering to the uniform circular motion teaching experience,proposed the uniform circular motion teaching first step is enables the student to grasp the uniform circular motion accurately the basic concept,and proposes the solution centripetal acceleration and the centripetal force concept teaching method specifically.

湖北省 鄂州 2 。湖北武汉摘要：本文主要对匀速圆周运动的教学经验进行反思，提出匀速圆周运动的教学的第一步是让学生准确掌握匀速圆周运动的基本概念，并具体提出解决向心加速度和向心力概念的教学的方法。

Crack growth direction of V-notch column sample under tensile-pressural loading was found by means of simulating the crack growth path side by side analyzing the distribution of Von Minses equivalent stress of the V-notch sample, the result shows crack growth direction of the sample under tensile-pressural loading is diametral direction of circle where the V-notch lies.

通过边分析试样的Von Minses等效应力分布，边模拟裂纹扩展方向的方法对拉压载荷下V型切口试样的裂纹扩展方向进行了模拟，结果显示V型切口试样在拉压状态下的裂纹扩展方向为棒料V型切口处圆周的直径方向。

Previous works require α, the eigenvalue of the linearization of the unknown function at its fixed point, is not on the unit circle or lies on the circle with the Diophantine condition.

以前在这方面的工作要求未知函数在其不动点处的线性化特征值α不在单位圆周上或在单位圆周上但满足Diophantine条件。

The Chinese machines converted rotary motion into longitudinal motion, because they started with the water-wheel, whereas the European machines converted longitudinal into circular motion, but in all other respects they were identical.

中国机械把圆周运动转换成直线运动，因为一开始使用的就是水轮；反过来，欧洲机械则把直线运动转换成圆周运动；两者在其余各方面基本上完全一样。

Http://www.changanyuan.commotion, because they started with the water-wheel, whereas the Europeanmachines converted longitudinal into circular motion, but in all other

长安源社区http：//www.changanyuan.com 译文：中国机械把圆周运动转换成直线运动，因为一开始使用的就是水轮；反过来，欧洲机械则把直线运动转换成圆周运动；两者在其余各方面基本上完全一样。

Http://bbs.cqzg.cnmotion, because they started with the water-wheel, whereas the European

春秋中文社区http：//bbs.cqzg.cn 译文：中国机械把圆周运动转换成直线运动，因为一开始使用的就是水轮；反过来，欧洲机械则把直线运动转换成圆周运动；两者在其余各方面基本上完全一样

The Sacred Round would be 9 Ahau and the Haab designation would be 8 Kankin. Thus the Calendar Round would be 9 Ahau 8 Kankin.

神圣的圆周会是9阿哈胡，哈伯历指示为8卡金，从而历法圆周会是9阿哈胡8卡金。

Tall: 64cm # Circumference of Neck: 9.5cm # Circumference of Chest: 25.5cm # Shoulder Width: 13cm # Length of Arm from Shoulder to Wrist: 22cm # Length from Elbow to Wrist: 10cm # Length of Back: 16cm # Circumference of Waist: 20.5cm # Circumference of Hips: 25cm # Length from Hips to Knee: 22cm # Length from Knee to ankle: 15cm # Circumference of Ankle: 7cm # Foot Size: 7.5cm

＃高层：64厘米＃圆周颈部：9.5厘米＃圆周胸围：25.5厘米＃肩宽：13厘米＃长度从肩至腕臂：22厘米＃长度从肘部至手腕：10厘米＃返回长度：16厘米＃圆周腰围：20.5厘米＃圆周臀围：25厘米＃长度到膝盖的臀围：22厘米＃长度从膝盖到脚踝：15厘米＃圆周踝关节：7厘米＃脚尺寸：7.5厘米

The movement contrails of the mixer heads were founded. The critical angular velocity of partially circular motion was deduced for both single grain and a group of grains.

分析单个颗粒的圆周运动，得到了单个颗粒作部分圆周运动的临界角速度；分析颗粒群体的运动，得到了颗粒群体作完全圆周运动的临界角速度，结果表明该值与颗粒物料常数及充装系数相关。

Through an analysis on mud-clogging mechanism of suction nozzles on wet type sweeper, a concept is suggested, that water ratio in dust nearing the wall of suction nozzle duct should be decreased so the mud stickiness can be controlled under a critical value and not sticking to the duct wall whereas water ratio in central dust passage of the duct is properly increased to satisfy effective dust absorbing. On the basis of the concept, a water spraying device is designed with improvement for suction nozzles. In the device, the water hole numbers, diameters and distribution along the nozzle circumference as well as initial direction of water spraying are all determined according to concrete suction nozzle structures.

通过对湿扫型道路清扫车的吸嘴易被泥土堵塞的机理分析，提出降低吸嘴流道近壁的尘土的含水率，控制泥块的黏性处于临界黏性以下，使泥块不黏附于流道壁面；而将吸嘴流道中心部位的尘土的含水率适当加大，以满足有效压尘的解决思路，并根据这种思路改进设计了一种吸嘴喷水装置，按不同吸嘴的具体结构确定孔数、孔径、孔沿圆周的分布规律和喷水的初始方向等要素。

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。