1.4.1 boundary in the content. Automotive wheel bearing grease machine, and covers the following areas:
1). Automotive wheel bearing grease using a 8 cartridge
2). Use of air pressure, etc. are in compression
3). Can grease within period 5 minutes
1.4.2 boundary in population and sample
1) population, including employee's company Isuzu Rai service limited company 2002 and hornbill auto Co., Ltd. Years 2558 number 80 people
.2) subjects were employees of the company's services 2002 Isuzu Chiang Rai limited company and hornbills Auto Limited years of 45 2558 People
1.4.3. The boundary in variable
1) variables, to machine automobile wheel bearing grease
.2) variables, including the quality of automotive wheel bearing grease machine. And the opinion of the car wheel bearing grease machine 1.4.4
. Scope the project period
start since October 2558 to February 2559
.
การแปล กรุณารอสักครู่..