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MSP430F169 microcontroller was the core components of control and measurement function of an electromagnetic relay characteristic parameter tester. The tester also included DC power module, power amplifier module, constant current source module, keys, and digital tube display module. The tester could test the data of 943-1C-12DS electromagnetic relays including the minimum pull-in voltage, maximum release voltage, relay coil voltage rating when the pull-contact time, release time as well as the contact value of the contact resistance. The system could complete automatic measurement parameters to achieve all the basic requirements of design. And all of the test data was displayed through the 74HC573 digital tube.

摘 要：以MSP430F169单片机作为控制和测量的核心部件，辅以直流稳压电源模块、功率放大电路模块、恒流源模块、按键和数码管显示模块等组成一个电磁式继电器特性参数测试仪，完成对943-1C-12DS电磁式继电器最小吸合电压、最大释放电压、继电器线圈电压为额定值时的触点吸合时间、释放时间以及触点接触电阻值的测试，该系统能够实现成套参数自动测量，所有测试数据通过74HC573数码管进行显示。

In this dissertation, some research on the contact reliability of relay has been made on the basis of a new measuring method for contact resistance that is the pulse current method. The thermal propagation has been analyzed so as to analyze the thermal effect of pulse current flowing over contact.

本文在提出一种新的测量接触电阻方法——脉冲电流法（脉冲宽度为300μS）的基础上，针对继电器接触可靠性进行了研究，并对触点热过程进行了分析，以便分析脉冲电流对触点产生的热效应。

The housing material is the PET glass fiber enhanced and anti-burning (V-0) imported insulation material; the material of the contact element adopts the red copper or the copper alloy; the material of the contact segment is the beryllium bronze, the surface of the contact element is glided or silver-gilt.

其壳体材料采用PET玻纤增强型、阻燃型（V-0）进口绝缘材料；接触件材料采用紫铜或铜合金；接触部分的材料为铍青铜，接触件表面镀金或银。

Contact contact with the Department for the high reliability of the same coin sliding contact.

接点部为接触可靠性很高的两面滑动接点。

The contact among grains can be classified as perfect contact and sliding contact.

将砂土颗粒的接触方式分为完善联结和滑动联结。

He then compared the two to make contact with the sliding surface relative to the surface of one of the imposition of a shear force to overcome molecules between gravity and cut the actual contact area generated by contact, causing friction .

然后，他比较了两个好联系与滑动面相对表面上的一个强加的剪切力，以克服分子之间的重力和切实际的接触面积，所产生的接触，造成摩擦。

Main job is to guarantee the scraping interaction and equipment on both sides of the friction surface or can obtain higher precision and accuracy, precision and shape accuracy, precision and contact transmission because of good lubrication, manual and repeatedly is worthy, large amounts of wind, time-consuming, scraping the time needed for different devices vary, such as boring slider and slide block wind profiling, between the match before measuring clearance between the original value, and then according to the technical requirement to measure the value of time and scraping scraping, then apply DanFen red on the slider, manual let slip on the slide seat back and forth, they do straight-line movement between full contact and friction, reoccupy scraper scraping friction creates the contact point, so repeatedly, until the technical requirements for the match, single within 2 days, must blow to the boring if all the time to work with wind, a half month is required.

刮削过程。刮削工作主要是为了保证设备相互接触并摩擦的两面间能获得较高的尺寸精度、形状精度、位置精度、接触精度、传动精度和良好的润滑，因是手工操作且需反复配刮，故工作量大，耗时较长，设备不同，刮削所需时间也各不相同，例如镗床上滑座与下滑座间的配刮，刮削前先测量出二者之间原有的间隙值，然后根据工艺要求测算出需刮削值及每次的刮削量，再将红丹粉涂于上滑座之上，手工让上滑座在下滑座上来回做直线运动，使它们之间充分接触和摩擦，再用刮刀刮削摩擦产生出的接触点，如此反复多次，直至技术要求范围之内，单此项配刮需2天左右，若对于整个镗床所有配刮工作的时间总和，则需半个月左右。

In this process, the discharge process of single point to point contact is transformed to the process of both point to point contact and the overall surrounding contact of sphere Ni through the self redox reaction, thus making a highly efficient electron transfer process. In this dissertation, the catalytic electrolysis mechanism is discussed. The influence of various parameters (e.g. kind and concentration of catalyst, reaction temperature and electrolysis duration) on electrolysis were investigated.

本文首次提出了以KMnO_4为代表的高锰酸盐作为电解过程电子传递的媒介，通过锰盐自身氧化还原反应的参与，在阳极和溶液中的球形Ni_2之间建立起高效的电子转移过程，使球形Ni_2和阳极之间单一的固体之间的点点接触放电，转变为点点接触放电和球镍与溶液全方位包围接触放电过程，大大提高了电解过程的效率。

In a connector used for recording and reproducing apparatus of a memory card, it is aimed to prevent an instantaneous make break phenomenon, in which a contact portion of a contact and a terminal of a memory card is instantaneously opened and suppliance of electric power to the memory card is instantaneously stopped when an impact is applied to the connector, and a deformation of the contact due to the impact.

一种用在记忆卡记录和复制装置中的连接器，其目的是避免闭合瞬间断开现象。在该闭合瞬间断开现象中，当连接器受到冲击，以致于该冲击造成触点变形时，触点的接触部分和记忆卡的端子瞬时断开，对记忆卡电能的供应瞬时中断。

The analysis shows that vertical growth is achieved thanks to discrete contact points and regions with continuous contact, that the contact pressure creates tension in the stem as observed experimentally, and that there is a maximal radius of the pole around which a twiner can climb.

这个模型可以解释为什么藤蔓不能在半径大于一定值的树干上生长，他们计算出当树干半径大于3.3倍的藤蔓自然曲率半径时，藤的尖端便不能继续缠绕树干向上生长，而是自身卷曲起来。文章的后一页半研究了摩擦力的影响，很明显，摩擦力是使藤蔓植物能够支撑自身重量的主要原因。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？