189 m-long steel bar to be cut into 4 m or 7 m in two sizes, how to cut method of least material? related questions

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189 m-long steel bar to be cut into 4 m or 7 m in two sizes, how to cut method of least material?1Agnes2012-03-03 05:16:16
I hope to write more to explain ! Help !
The round steel where with qualitative material of 55 chromic manganese sells0mason brown2012-07-12 12:42:08
Polystyrene foam (foam insulation board) material by any method of surface treatment can make the surface light up?1Mortime2012-03-19 06:16:08
By what means may be flat or in a polystyrene material (object ) surface shiny side up ? The best method is simple to use and inexpensive. Thanks for helping !
The graphene prepared by white has a high monolayer rate (up to 99%), fewer defects, and can be dried for a long time. Can be prepared into a variety of solutions to facilitate compounding with other materials. Raw material is natural graphite from a wide02021-11-16 00:12:00
The polishing slurry and processing technology of micro-abrasive slurry jet were studied. Through the analysis of the physical and chemical properties of additives and their state changes under the jet, the comprehensive effects of the types and proportions of different additives, as well as the types, proportions and particle sizes of abrasive on the formation of uniform slurry, the promotion of good abrasive dispersion and the jet polishing effect were explored. The effects of different types of nozzles, polishing slurry, jet distance, jet time, different initial RA, jet pressure and jet Angle on the surface profile, material rem The graphene prepared by white has a high monolayer rate (up to 99%), fewer defects, and can be dried for a long time. Can be prepared into a variety of solutions to facilitate compounding with other materials. Raw material is natural graphite from a wide range of sources, is prepared by industrial methods can be scaled up production. To make the industrial application of graphene possible, promote the advancement of high-tech materials, and promote industrial development. Chapter 3 Graphene-modified activated carbon for supercapacitor has good technical performance:Long cycle life, graphene modified ultracapacitors mountain in its storage process does not produce chemical reaction, the energy storage process is reversible, no "memory effect", can be repeated charge and discharge hundreds of thousands of times, 500 times that of corrosion ion batteries, nickel-metal hydride and nickel cadmium battery is 1000 times, if the ultracapacitors charge-discharge 20 times a day, continuous use of up to 68 years: High efficiency: super current discharge capacity, high energy conversion efficiency, small process loss, high current energy cycle efficiency ≥90%. 
Shoe Sizes2Calvi2012-01-19 01:49:17
Why is it so hard to find shoe sizes on the shelves in the U.S. for 12 years and older ( women)? I have a 14 year old daughter who wears a shoe size 12 women. Trying to find shoes dress shoes or tennis of his stature in women is almost impossible! The foot is still growing. She has not yet learned to walk in heels, so trying to order, including dress shoes in his size in Internet only found 4 inches to 6 inches heels .... can not walk in them! In the current era there are more and more young gils with large shoe sizes with little or no variety! Any suggestions or help with the provision of these styles appropriate in size to the vendors would be greatly appreciated .
Plastic pad, reinforced protective layer of plastic pads, Plum frame, steel protection cap, torque wrenches, steel connection sleeve,1Marvi2012-02-09 01:14:06
Plastic pad , reinforced protective layer of plastic pads , frame plum , steel protection cap wrenches , steel sleeve connection
Photon is what kind of material? Why is it not by the material composition?1Queenie2012-03-29 00:56:05
The photon is what kind of material? Why is not the composition of matter?
I NEED 20,000 MEN JEANS 12OZ SIZES 30-406Clyd2012-02-08 19:43:40
20,000 JEANS MAN NEED 12oz SIZES 30-40
japanese made firecrackers come in what sizes0Jean2011-12-22 04:59:45
fireworks from 1''x 1 / 4 ''to 3'' x 1 / 2 '' , made with Flash powder.list suppliers small orders.
Bamboo Wood Frames All Sizes1Charlotte2012-05-28 19:39:57
I am interested in all sizes of bamboo frames Picture Style , I am interested in large quanities for my business here in Hawaii. You can reach me at [email protected] Thank you kindly Mr. Greg White Mr.
Why sata hard disk volume sizes?1Dun2012-04-10 04:35:04
SATA hard disk found my colleagues that my small size, the volume of the different parameters of SATA hard disk performance and what is the difference?
I want to set up a factory that produces different sizes of plastic injected pots for plants1Marvi2016-10-21 03:14:24

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