Q:You brother ah, sister who can give me a complete waterproof construction program, the basement roof with polyurethane, kitchen and toilet with JS, thank you friends

Can be downloaded from Google, these two materials approach is very simple and very common.

Q:Our factory production of gears running noise, want to solve through the grinding method, seeking expert guidance. Question added: We used this method, because we buy grinding machine financial capacity is not realistic, and occasionally heard the gear grinding the processing method, they have tried, is to match the two gears to exert a certain pressure on the grinding sand bite A few minutes, after the experiment found to be able to improve some, but now our process is not good to control the angle of the helical gear, seeking expert detailed instructions, or what better way to solve our helical gear noise problem? More

This mainly depends on the gears used in what machinery and the hardness of the gear itself. If the accuracy of the gear itself is 7 or more and grinding is the finishing method, it is necessary to consider the small letter tolerance group, usually base section or tooth profile and other problems, first measure base section, such as base section need to pass through the improvement Tooth surface roughness to noise reduction; if the hobbing for the finishing method, the best plus grinding can be resolved. In addition, the parallelism of the two bearing holes can also cause tooth contact to produce noise.

Q:In the airport shopping mall and other public places up and down the stairs or escalators should rely on what to stand?

Some people say that the right, it was said to the left. A professional escalator engineer will tell you that the middle of the station. why? First, the user long-term left or right, will make the escalator long-term pressure, the side of the parts of the high frequency of damage, shorten the life of the escalator. Second, we rely on the side of the station, leaving the other side, is implied to let others walk from the gap. To know that the escalator is automatic, you use it to ask you to obediently stood. Please take the ordinary stairs to go. Or you go anxious, met someone else, we fell, and on both lose, haste not up to.

Q:My model: hippocampus Fumei to transmission: manual Displacement: 1.6 l Driving range: 2200 km Time of purchase: September 2017 Problem Description: Ask the experts advise on the three generations of the first solution of the United States to the oil 4S there are two kinds of oil, one is mineral Oil 10W-30 The other is semi-synthetic 5W forged teeth forged forging feathers Quan Chuan Huowen these two are SL level. Compare the favorite Castrol's EDGE5W-304 lift. Other do not know. In fact, they also know that economic cars do not need to use a good oil, but still want to own the first car a little better ~ by the way here we winter temperature is generally not lower than minus 25 degrees. Road more urban areas, and occasionally run suburban road. Seek expert advice ~! More

Semi-synthetic 5W-30 to meet your needs, semi-synthetic 5000 a security has been very extravagant

Q:What are the general items of a construction project

Appendix B Construction Division (sub-division) project, sub-project division B.0.1 Construction Division (sub-division) project, sub-project can be divided according to Table B.0.1Appendix B Construction Division (sub-division) project, sub-project division B.0.1 Construction Division (sub-division) project, sub-project can be divided according to Table B.0.1...

Q:For example, what records, is not to monitor what the third party? The More

Anti-dropper to do third-party testing, and report...

Q:This is a question, who can give a full answer

Entrusted to the qualification of the unit or the original manufacturing unit for daily maintenance and maintenance of the number of maintenance and quality supervision of the project; check the care of the waste of the waste of the city, whether to send maintenance personnel on time maintenance personnel, whether or not According to the provisions of the time-by-day maintenance. Requirements elevator maintenance personnel to provide a valid qualification certificate and do a good job of each maintenance

Q:What is chemlon533G material?

Is a kind of nylon material, belonging to the organic material in the polymer material bar

Q:Grocery elevator is always automatically anti-leveling what is the reason

The motherboard set the time to return to the base station, or lock ladder are likely to have this problem

Q:What are the electrical parts of the elevator and what are their roles?

Control cabinet, used for daily operation to control the inverter, drag the system control, running curve, speed, torque, etc. Weighing, provide car weight information, auxiliary frequency converter communication system for car personnel and room calls and remote control and many more. Door system for door control to open the door