Spur Gear is the most efficient
Gear ratios will let the engine run at the speed and load at which it is most efficient, which is good for low fuel consumption and an exhaust that is as clean as possible.
more efficient, most efficient
The most efficient is a geo-thermal heat pump, if properly installed.
Gas-fired, storage-based water pumps are the most energy efficient type.
I can't give you a for-sure answer, but Cree LEDs are some of the most efficient out there.
Co efficient increasing/degreasing the contact circle is the correction factor in gear.
The superlative of efficient is "most efficient."
The easiest and most efficient method to find out about the products offered by Net Gear is to visit their website. There they have a list of all the products they offer such as wireless routers.
The gearbox found in a car allows the engine to perform across its most efficient rev range - or across the range it produces the most torque.
More efficient and most efficient are the comparative and superlative forms of "efficient".
A screw is the most efficient.
ATP is the most efficient molecule
Heat is the most efficient agent of metamorphism.
Gear ratios will let the engine run at the speed and load at which it is most efficient, which is good for low fuel consumption and an exhaust that is as clean as possible.
most cost-efficient
Woodway Treadmills claim to be the most energy efficient.
around 1700 to 2100 will be the best fuel mileage and still have good power