Search the dictionary A Chinese word or character, or English Draw a character Search 11 entries. zhēnkōng 真空 vacuum zhēnkǒng 针孔 pinhole zhēnkǒng 針孔 pinhole zhēnkōngguǎn 真空管 vacuum tube zhēnkōngbèng 真空泵 vacuum pump zhèngquánzhēnkōng 政权真空 power vacuum zhèngquánzhēnkōng 政權真空 power vacuum zhēnkǒngshèxiàngtóu 针孔摄像头 miniature hidden camera zhēnkǒngshèyǐngjī 针孔摄影机 miniature, concealable camera with a pinhole-sized lens zhēnkǒngshèxiàngtóu 針孔攝像頭 miniature hidden camera zhēnkǒngshèyǐngjī 針孔攝影機 miniature, concealable camera with a pinhole-sized lens