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31.
In order to solve the serious pollution of industrial altunintim electfolysis cell, the researchand development of the usage of inert anode andcathode has an importal significance. However, the lltilization of inert anode is not successful yet, the using of titanium diboride as a mixtUre of carbon for use as the ineft cathode prepared by coating TiB,-C mixtllfe for the electfolysis of altunina in Hall-Heroult cell is wellknownll--6]. With such a cathode, a large savingin the production cost …  相似文献   
32.
0 INTRODUCTIONSafetyvalveisplayinganinevitableroleofsafetyunitfunctioninboilerandvariousother pressurevesselsandhasbeenarrangedsystematicallysoastobe permittedtomanufactureonlythroughstrictinspectionteststipulatedinrelevantorganizationsoftheIndustrial…  相似文献   
33.
IntnMluctiouIn the passage of a centrifugal impeller, there is notonly a secondary flow toward a suchon-side from aPressure-side along a casing or a hub s~e but also aleakage flow through a clearance between a casings~e and a blade hp. The~, it is imPOI'tant tO clarifysuch a passage flow with regard to the design of acentrifugal turbomashinery with high efficiency.The impeller passage nows have been inveshgatedfrom the flow measurementS with a pressure Probe, ahot-wire anemometer and a LDV…  相似文献   
34.
INTRODUCTIONSincethioureawasutilizedasthelixiviantofgoldearlyin1932[1],extractinggoldfromoreorscrapbyacidicthioureasolutionha...  相似文献   
35.
STUDY ON SHIFT SCHEDULE AND SIMULATION OF AUTOMATIC TRANSMISSION   总被引:3,自引:1,他引:2  
0 INTRODUCTIONThe main powertrain of engineering vehicle,suchas loader, bulldoZer and scraper etc, adopthydrodynamic drive in order to improve theadaptability to heavy lo.d[ l '2]. However, the transm-ission efficiency of hydrodynamic drive is very lOw,especially althOugh driveline is supposed to supplyhuge power under heavy load, it contrarily degradelargely even to zero. Hydrodynamic drive causes workefficiency low, and energy waste. The wasted energywas transfOrmed into heat lead to o…  相似文献   
36.
1INTRODUCTIONMetalhydrideshavebeenusedasnegativeelectrodesofnickel/metalhydridebateriesinplaceofcadmium,becauseoftheirhighene...  相似文献   
37.
1INTRODUCTIONIntheelectrolyticproductionofaluminium,thecelconsistsofacarbonanodeandanaluminiummetalcathode.Thedominantpotent...  相似文献   
38.
Thoriumisamainsourceofradioactivityintherareearthminerals.Thetraditionalprocestoremovethoriumconsistsofseveralstepsincluding...  相似文献   
39.
NEW OPTIMAL LARGE ANGLE MANEUVER STRATEGY FOR SINGLE FLEXIBLE LINK   总被引:2,自引:0,他引:2  
INTRODUCTIONTo accommodate the requirement of lightweight,for many machine systems, such as flexiblemanipulator, large solar array and flexible antennas ofspacecraft, flexibility has become an imPOrtantcharacteristic. But flexible vibration can degrade badlythe peforance and the precision of flexible systems.Control of vibration becomes very important asdesigners attempt to push the state of the art withfaster and lighter machines systems. Researchers haveexammed many different controlle…  相似文献   
40.
1 Introduction  Laser - producedplasma (LPP)isanattrac tivetabletopEUVsourceforapplicationinEUVlithographyduetoitssmallsize ,highpeakpowerandspatialstability .However,theconventionalLPPsourcewithmetaltargethasaseriousdisad vantageofejectinghigh -temperaturea…  相似文献   
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