The phrase "a type of portable" is correct and usable in written English.
It can be used when describing a category or classification of portable items or devices.
Example: "The new gadget is a type of portable charger that can power multiple devices at once."
Alternatives: "a kind of portable" or "a form of portable".
(3) In nondeveloped areas, operating any type of portable motor or engine, or device powered by a portable motor or engine, except pursuant to the terms and conditions of a permit.
Fuel cells could someday power numerous devices – automobiles and mass transit systems, buildings, and virtually any type of portable electronic device.
Wonder is building what it calls a "new type of portable hardware device that might be considered a hybrid between a powerful smartphone and a gaming console".
Facing the lack of traditional fault recorder technology and according to data collection requirements of the fault analysis of power system, this article established a new type of portable recorder that was designed surrounding FPGA.
A new type of portable radiation detector that has been developed by Britain's National Physical Laboratory (NPL) should, however, speed up the process of screening places that may have been contaminated with alpha-emitters such as 210Po.The most effective way of looking for alpha particles is with a scintillation counter.
The advance could lead to a new type of portable chemical analyzer to monitor production at chemical plants or detect explosives.
But wording is everything, and Cook once again didn't exactly eliminate the possibility of Apple making a new type of portable computing device.
Last week French legislators passed a law that requires content downloaded from online stores to be playable on all types of portable player, unless copyright holders grant their permission otherwise.
Swedish fuel cell developer myFC unveiled at the recent CES Consumer Electronics Show 2017 in Las Vegas what it says is the world's thinnest fuel cell, for higher performance in considerably less space for all types of portable electronics.
The earliest surviving documentary evidence for the use of the hand cannon, considered the oldest type of portable firearm and a forerunner of the handgun, are from several Arabic manuscripts dated to the 14th century.
