1. test 4-stroke petrol engine, without installing the save box plus, and save the results.2. install the save box plus 4-stroke petrol engine to the.3. test 4-stroke petrol engine by installing the box save plus and save the results.4. compare the effectiveness of four stroke petrol engine with a save box to save boxes plus plus.
การแปล กรุณารอสักครู่..
