求翻译：摘要：乘用车白车身是指四门两盖（前后车门、发动机盖和行李厢盖）安装前的车身骨架，白车身四门装配质量好坏将影响到汽车外观、舒适性等从而给顾客带来抱怨，所以对白车身四门装配调整过程中出现的问题及控制措施也是各汽车制造商、汽车维修店等迫切想掌握的知识，本文就乘用车白车身四门装配调整问题影响因素及控制措施进行了探讨。是什么意思？

Abstract: white passenger car is four two covers (front and rear doors, hood and trunk lid) before installation of the body frame, body in white four assembly quality is good or bad will affect the cars look, comfort and so in order to the customer bring complaints, so the dialogue body four assembl

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Abstract: While is refers to four with the mechanically refined white sugar ka automobile body two to cover (around vehicle door, cowling and baggage theater box covers) installs before the body frame, thus the white automobile body four assembly quality quality will affect the automobile outward ap

Summary: passenger car white body is means four door two cover (before and after door, and engine cover and luggage van cover) installed Qian of body skeleton, white body four door Assembly quality is good or bad will effect to car appearance, and comfortable sexual, to to customer brings complained