I am not an expert on mechanics. Just speak on behalf on my limited knowledge on transmission and steering.
The steering mechanics of the tank is very different from the car. For a car, steering is completely separate from the transmission thing. However,a tank steers by varying the speeding...
the westmost point that Han empire had reached was Fergana valley, also known as Transoxiana, where there were some Hellenic states there. Bactria was certainly bordering to West "China" and well known to Chinese, so was Parthians, but it would be misguided to think china's rule in central asia...
beijing has few industry workers those days as beijing has been under de-industrialization for over 20 years
the salary for a construction worker starts at USD 500 per month. it could be over 1000 dollars for a skilled one. a labor worker might earn more than a entry-level engineer or white...
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My old bean, the first J10B prototype was built in 2009. it's a major upgrade of J10A including AESA/IRST/DSI intake etc.it takes a long time to test and improve before it's fully mature. they chinese are not less eager to have them than you.