截至今天(10月1日),航天员叶光富累计在轨时间已经达到340天。目前,中国航天员累计在轨飞行时长200天以上的有6人。航天员叶光富分享了他此时此刻的感受。叶光富:我很幸运赶上了一个伟大的时代。我也相信,在不久的将来,在轨驻留的时间纪录将会很快被刷新。作为新时代中
Fluid reversing valve arrangement for rotary tool motors of the vane type My invention relates in general to rotary reversible motors and more particularly to fluid reversing valve mechanisms and the fluid passages to and from the valve mechanism and through the motor, the handle and attendant ...
PROBLEM TO BE SOLVED: To provide a door lock device for a vending machine or the like which is capable of exactly preventing pull out of a pivot in a movable protective body, picking of the movable protective body and a fixed base plate or violent destruction. ;SOLUTION: An upper arm pla...