基本解释[动力与电气工程]双头螺杆[机械工程]双头螺杆英汉例句双语例句The appendix is a worm-like tube between two and four inches long protruding from the start of the large intestine.阑尾是一突出于大肠起始端，2-4英寸长的蠕虫样的管状器官。专业释义动力与电气工程双头螺杆机械工程双头螺杆