portable chassis
便携式底盘
以上为机器翻译结果，长、整句建议使用 人工翻译 。
NAMDQ exterior structure for the portable use of engineering plastic waterproof chassis, suitable for field test use.
NAMDQ外形结构为便携式使用工程塑料防水机箱，适用于现场试验使用。
youdao
But fear not: while the new PowerBook's chassis is unchanged, under that black polycarbonate skin is a totally new logic board that gives this portable more in common with Apple's supercomputing G4 desktop machines than last year's PowerBook.
CNN: PowerBook 2000 is nearly perfect for mobile Mac users
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