句式翻译

Although its accuracy left much to be desired, its simplicity led to wide application in naval architecture.

请问although引导的从句该如何理解，主如果划线部分。

Although its accuracy left much to be desired, its simplicity led to wide application in naval architecture.
leave much to be done：留下不少东西有待于被做。

Although its accuracy left much to be desired：虽然它的精准度还有不少不足之处，（引申译法）