envelope

A2 noun

Các nghĩa

phong bì · bao thư

A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.
vỏ bọc, lớp bao bọc

Something that envelops; a wrapping.
túi khí, vỏ bọc khí

A bag containing the lifting gas of a balloon or airship; fabric that encloses the gas-bags of an airship.
đường bao, mặt bao

A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects.
đường bao, đường biên

A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.
đường bao âm thanh

The shape of a sound, which may be controlled by a synthesizer or sampler.
thông tin bao thư

The information used for routing a message that is transmitted with the message but not part of its contents.
màng bao, khoang giữa hai màng

An enclosing structure or cover, such as a membrane; a space between two membranes