ARTICLE
Recommend to read
“Economical” bicycle drive
Almost all bicycle drive designs share a common drawback that reduces their efficiency. This drawback is the uneconomical expenditure of muscular energy when shifting effort from one leg...
WITH AN EYE ON “TRENDSETTER”
In countries which are called "Maritime powers of the second tier", you can see two diametrically opposite approaches to creation of own torpedo ships. Some tried to build world's most...
