Other unconventional liquid hydrocarbons include production from oil sands, ultra-heavy oils, gas-to-liquids technologies, coal-to-liquids technologies, biofuel technologies, and shale oil.Unconventional natural gas can be of several types.ther unconventional liquid hydrocarbons include production from oil sands, ultra-heavy oils, gas-to-liquids technologies, coal-to-liquids technologies, biofuel technologies, and shale oil.
Unlike standard headphones, which use relatively large drivers (speakers) and fit on top of or around your ears, or earbuds, which use fairly small drivers and sit loosely in your outer ears, in-ear-canal headphones use very small drivers and actually fit inside your ear canals (thus the name canalphones).
Open Fit Hearing Aids. Open fit hearing aids do not completely fill your ear canal. Instead, an open fit device is usually a very small behind-the-ear hearing aid with a small tube or wire that connects to a speaker in the ear canal.ustom Fit Hearing Aids. Custom fit hearing aids are just that custom molded to fit inside your ear canal. They can be completely inside the ear canal, fit partly inside, fill the lower portion of the outer ear, or fill most of the bowl-shaped area of the outer ear.