常见例句双语例句The present invention provides a fixed focus handy ovulation tester, the said ovulation tester comprising an inner casing (1), having a top and a bottom end;本发明提供一种手持式固定焦距排卵测试仪，该排卵测试仪包含具有 顶端和底端的内套（1）；ip.com 返回 casing tester