词汇	tracer needle
释义	tracer needle 触针,描形针
随便看	plastic-clad fiber plastic clad fibre plastic-clad optical fiber plastic-clad silica plastic clad silica fiber plastic-clad silica fiber plastic clad silica fiber optic cable plastic-clad silica fibre plastic clad silica fibre optic cable plastic clamp plastic clamp forceps plastic clamshell type brace plastic clamshell-type brace plastic clay plastic clay grinding mill plastic clay pan soil plastic clay soil plastic cleaning agent plastic clip Plastic clips attach to cord plastic closely compacted radius plastic closure plastic closures with tamper-evident bands plastic clot plastic cloth