helical lamp的相關資料：
臨近單詞
helical lug
helical
helical blade drawing machine
helical plating stress tester
helical multishell structures
helical and twisted materials
helical antigenic determinant
helical pinion helical pinion
Helical slow-wave structure
helical baffle heat exchanger
helical gear with helix angle
helical traveling-wave tube
