"103880499"@en-us . . "a thin plate or small rod of quartz cut along certain lines and ground so that it can produce an electric signal at a constant frequency; used in crystal oscillators"@en-us . . "0"^^ . "quartz crystal"@en-us . "0"^^ . . . . "04032710-n"^^ . . . . . "quartz crystal"^^ . "104032710"^^ .