求翻译：13、看规格。选购教练车配件时，要查明主要技术参数，特殊技术要符合使用要求。有的假冒伪劣产品外观与真货相差无几，但装上去了就是不太合适，要么大点或小点，使用起来总是不太满意，并给行车安全带来隐患。是什么意思？

13, see specifications. Choose the coach when the car accessories, to identify the major technical parameters, special technologies to meet the requirements. Some look and real of fake and shoddy products comparable to, but put up is not very appropriate, either large or small points, using them is not satisfied with, and bring to safety risks.