In the third chapter, mathematical model of size tolerance, form tolerance, orientation tolerance and location tolerance of cylindrical feature was established.

1、

In the extruding process, not only the good properties is needed but also the high degree of accuracy of the size tolerance and shape-position tolerance. All these features increase the degree of die design.

一方面型材挤压成形难度大，另一方面型材的尺寸公差和形位公差精度高，这些特点对挤压模具的设计加大了难度。

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2、

As guiding principles, the tolerancing principles deal with the relationship between form-position tolerance and size tolerance in precision design.

公差原则是进行精度设计时处理尺寸公差与形位公差关系的指导原则。

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3、

Quality standard: thickness tolerance, size tolerance, polished degree, color are up to exporting standard.

质量标准：厚度误差，尺寸误差，磨光度，以及颜色统一度等达到出口标准。

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4、

Based on the analysis on the size tolerance rules and tolerance range usage ratio of three kinds of tolerance rules, give out the selection rules.

通过对三种公差原则的尺寸公差值和公差带利用率的分析，给出应用公差原则的选择原则。

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5、

The statistical calculation and judgement of size tolerance

尺寸公差的统计判断与计算

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6、

Design requirements for the size tolerance of size features and related geometrical tolerances of the central feature, including the envelope requirement, maximum material requirement and least material requirement.

相关要求是尺寸要素的尺寸公差与其相应的中心要素的形位公差相互有关的设计要求，包括：包容要求、最大实体要求和最小实体要求。

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7、

Different dimension constraint modes are de tailed. Third, a generic mathematical model of size tolerance is deduced based on mathematical definition systematically which can interpret the semantics of size tolerance exactly and completely.

从公差的数学定义出发，系统地推导了广义的尺寸公差数学模型，准确完整地表示出了尺寸公差的语义。

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8、

One car come, one car go, tow car peng peng, one car die.

一车来, 一车去, 两车碰碰, 一车死.

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9、

Quantitative Adsorption of Ammonium Salt of Polyacrylic Acid on Nano size Y TZP

聚丙烯酸铵在纳米Y-TZP上的定量吸附研究

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10、

Research on catalytic performance of small crystal particle size Y Zeolites

小晶粒Y型分子筛的催化性能

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11、

Effect of grain size of zeolite Y on its catalytic performance in liquid phase alkylation of benzene with ethene

Y型分子筛的粒径对其催化乙烯和苯液相烷基化性能的影响

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12、

Growth and Optical Uniformity of Large Size Y: PbWO_4 Crystal Grown by the Bridgman Method

大尺寸Y：PbWO4晶体的坩埚下降法生长与光学均匀性研究

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13、

Methods After T tube was disinfected, size 9 "Y" needle was punctured into T tube, and 38% meglucamine diatrizoate was dripped slowly into it.

方法常规消毒T管，用9号Y形穿刺针穿刺入T管，缓慢滴入38%泛影葡胺以显影胆道。

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14、

All Arthur's promises are not worth a rap.

阿瑟的全部许诺都是空的,毫无价值.

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15、

The street was plunged in cool shadow ( Richard Wright )

街道突然陷入荫凉之中 ( 理查德赖特 )

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16、

Please write on both sides of the paper-waste not, want not.

请在纸上两面都写上东西 —— 不浪费, 不愁缺.

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17、

We are looking for a paper to write on.

我们正在找写字用的纸.

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18、

Why write on the blackboard and why not broadcast?

为什么写在黑板上面而不广播?

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19、

Please write on one side of the paper only.

请单面写.

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20、

For official use only . Do not write on this page.

此页只供本馆记录之用,不必填写.

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