revolution

Describes the principle of flatness filter carrousel,the maintenance method of relevant doubtable failure points,some matters to use multi-meter and solid state relay by means of a case of troubleshooting for a uncommon failure.

列举了一例罕见的疑难故障,介绍了均整转盘工作原理、相关的可疑故障点的维修方法、万用表和固态继电器使用的一些问题。

By presenting and proving some quoted theorems and theorems on all revolution quality of revolute pair in plane four-bar closed chain with prismatic pair,the author obtains a systematic and completed type judgement theorem of plane four-bar mechanism with single and double prismatic pairs.

通过提出并证明含移动副平面四杆闭链中转动副之整转性的若干引理、定理,得到了系统、完备的含单、双移动副平面四杆机构的类型判定定理。

The existing condition of the epicyclic joint in the hinge 4 bar linkage is popularized and used for the closed link of a planar 4 bar linkage containing the shifting joint.

将铰链四杆闭链存在整转副的条件推广用于含移动副的平面四杆闭链，得到了含移动副的平面四杆闭链存在整转副的条件，该条件对各种情况的平面四杆闭链都是适用

It is a big challenge for Chinese real estate industry in the period of adjustment and transformation to solve these problems.

如何化解这些矛盾是处于调整转型期的中国房地产业必须直面的难题,而"解题"的第一步是要深刻认识关系房地产业发展的八大关系:部门经济与国民经济的关系、市场化与住房保障的关系、过分依赖与适度发展的关系、居住功能与过度消费的关系、外资进入与产业过热的关系、市场供需与结构性失衡的关系、适度降温与适度规模的关系、市场规律与社会公平的关系。