Cov zoo tshaj plaws ntawm kev ua ntej-ceg xaim yog qhov tseem ceeb hauv qab no:
Cov seismic zoo heev, cua nruj nreem: cov ceg ua haujlwm tau ua kom zoo nkauj, thiab cov khoom lag luam sab sauv yooj yim} shaken, ua rau nws tsim nyog tshwj xeeb rau cov tsev uas yuav tsum tau tiv thaiv hauv av vibrations {}}
Kev teeb tsa kev teeb tsa: Pre-Ceg Cables tuaj yeem tso rau hauv huab cua lossis yooj yim dua rau cov neeg siv hluav taws xob tsis zoo .
