TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The rotating shaft is made an alloy comprising 24-30 wt.% aluminum, 16-24 wt.% chromium, 3.2-4.6 wt.% nickel, 0.3-0.7 wt.% titanium, 0.2-0.6 wt.% silicon, 0.1-0.4 wt.% manganese, 1-2 wt.% cobalt, 0.1-0.2 wt.% molybdenum, 0.2-0.4 wt.% tungsten, 0.01-0.03 wt.% vanadium, 0.01-0.03 wt.% copper, 0.10-0.30 wt.% carbon, 0.01-0.02 wt.% cerium, 0.01-0.02 wt.% lanthanum and iron and added impurities (balance amount), where the nickel and titanium content is 4-5%, and mol ratio of chromium and aluminum, is 4-6. The weight ratio of (I) or high alkaline 22C hydrocarbyl substituted salicylic acid alkaline earth metal salt, is 1:2-1:5. The lubricant composition comprises sulfated ash ASTM D 874 having sulfur content of less than 0.3 wt.%, and ash content of not greater than 0.8 wt.%. The lubricant composition further comprises 0.2-1 wt.% titanium complex of formula (III), provided that carboxylate groups are present at ortho, meta or para position to hydroxy group; R1 and R2 are substituted at ortho, meta or para position to hydroxy group; and R5, R6, R7 and R8 are not alkyl or alkoxy group simultaneously.R5-R8 = 1-20C alkyl or alkoxy, preferably 3-8C alkyl or alkoxy.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: A gas tube is set with a pipeline valve. The device further comprises a gas storage tank provided with air source. The gas storage tank is mounted with the gas tube. The one end of the gas pipeline valve is provided with gas-distributing bag. The one end of the circular track is set with at least one traction machine. The speed-up gear comprises a first drive gear which is connected to the rotating shaft of a first gear. An intermediate gear is meshed with first gear. A second gear is meshed with intermediate gear. The second gear is also coupled to a driven shaft. The driven shaft is coupled with a generator shaft. The ratio of first gear is more than the number of gears of the second gear. The center-center distance between the second gear and intermediate gear can vary. The center-center distance between the first gear and intermediate gear remains unchanged, so as to achieve the replacement of the second gear. Preferred Method: The jar rotating shaft is prepared by (i) carrying out hot rolling of alloy of shaft; (ii) re-crystallization-annealing alloy for first time; (iii) carrying out cryogenic processing of alloy, and processing to obtain jar inner rotating shaft; (iv) re-crystallization-annealing for second time the jar inner rotating shaft member; and (v) subjecting for the jar inner rotating shaft to aging treatment, and then carrying out multi-tempering-cryogenic composite processing in cyclic manner, so as to obtain the final required jar inner rotating shaft, where the re-crystallization-annealing processes carried out for first and second times has same or different conditions. The tempering-cryogenic composite processing in cyclic manner, comprises (vi) tempering the inner jar rotating shaft member; (vii) subjecting jar inner rotating shaft to cryogenic process; (viii) tempering the jar inner rotating shaft; and (iv) subjecting jar inner rotating shaft to cryogenic treatment. In the step (vi), the tempering treatment is a low temperature tempering process, where the processing temperature is 85-155 degrees C, and the processing time is 1-6 hours or 2-4 hours. In the step (vii), the cryogenic treatment temperature is -30 degrees C to -85 degrees C, and the treatment time is for 10 minutes to 6 hours or 30 minutes to 1 hour. In the step (viii), the tempering process is high temperature tempering, where the processing temperature is 500-700 degrees C, and the processing time is 1-6 hours or 2-4 hours. In the step (ix), the cryogenic treatment temperature is -180 degrees C to -230 degrees C, and the treatment time is 10 minutes to 5 hours or 20 minutes to 1 hour. In the step (ii), the cryogenic treatment of jar inner rotating shaft is carried out at warm temperature to room temperature, at a heating speed of 5-10 degrees C/minute. In the step (iv), the cryogenic treatment of jar inner rotating shaft is carried out at warm temperature to room temperature, at a heating speed of 1-3 degrees C/minute. The steps (i) to (iv), are repeated at least twice or at least thrice in cyclic manner.