The Beijing Association of Science and Technology Journalists and Huazhong Agricultural University launched a voluntary tasting of genetically modified rice in Beijing yesterday. Experts gave their names for genetically modified technology and said that the safety and reliability of genetically modified crops is a definitive conclusion. According to the organisers of the event, since May of this year, they have held 22 GM rice tasting events in various cities across the country and have participated in nearly 1,000 volunteers. (July 14th, "Beijing Times") Is there any harm in genetically modified foods? What we can currently know is to say “safe and reliable†from the experts. However, this kind of "safety and reliability" has no material evidence. It is only theoretical. If it is not, it will not be a "free trial" activity. Well, after the trial, is it safe to ensure that it is not too? As with many foods, once you have no problem eating it, it does not mean that you have no problems eating twice, and it does not mean that you will have no problems eating forever. Many toxins that harm the body are produced after a long period of time. For example, we have been eating pesticide residues (000061, stocks). We have not heard of anyone who ate the food once it was eaten. It is only because we have had a variety of strange diseases in the medical data to verify the crime of toxic agricultural products. By the same token, the same goes for these genetically modified foods. At the moment, we have no more convincing data to prove that it must be harmless. Experts vowed that the "safe and reliable" argument is to be honest. Science is a serious matter. All conclusions must rely on data to speak. When there is no absolute safety data to support, experts cannot express their opinions indiscriminately. May I ask the experts where your "safe and reliable" data come from? Are you tasting the results yourself for decades? Or do you believe that foreign experts are saying? Nothing can be heard, let's imagine, if these genetically modified foods invented abroad are really “safe and reliable,†they would be so kind to get other countries to experiment and give away. They are good-hearted Bodhisattvas. When rice is brought abroad to test, it still costs a certain amount of money. They have all become neurotic diseases. And after they developed a new drug abroad, they are not all under the guise of humanitarian assistance. They use others as guinea pigs. ? Of course, the advancement and development of this society require the constant innovation of science and technology, and innovative technology is the driving force for the advancement of society. This GM food is not necessarily a tiger. Maybe it is a good thing for the benefit of mankind. However, when there is no data support to show that it is safe, we must have absolute respect and love for life and prevent our people from becoming guinea pigs. We Chinese have never spoiled ourselves, but we never dirty ourselves. If a genetically modified food is really "safe and reliable," then what trials should be conducted and what kind of free tasting should it be done? What kind of free food tasting volunteers should be recruited? I just wanted to say to our experts that if genetically modified foods are safe, if there are no problems at all, let the volunteers try to eat. It would be better for our experts to try it. Only you know science. Only after the trial did you know the true feelings and physical changes. Volunteers try to eat just passion. Excuse me, experts, have you tried this “safe and reliable†GM rice? (Yangtze Wang Guopeng)
CNC Machining is a manufacturing process in which pre-programmed computer software dictates the movement of factory tools and machinery. The process can be used to control a range of complex machinery, from grinders and lathes to mills and routers.
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CNC Mills
CNC mills are capable of running on programs comprised of number- and letter-based prompts, which guide pieces across various distances. The programming employed for a mill machine could be based on either G-code or some unique language developed by a manufacturing team. Basic mills consist of a three-axis system (X, Y and Z), though most newer mills can accommodate three additional axes.
CNC Lathes
In lathe machines, pieces are cut in a circular direction with indexable tools. With CNC technology, the cuts employed by lathes are carried out with precision and high velocity. CNC lathes are used to produce complex designs that wouldn`t be possible on manually run versions of the machine. Overall, the control functions of CNC-run mills and lathes are similar. As with the former, lathes can be directed by G-code or unique proprietary code. However, most CNC lathes consist of two axes - X and Z.
CNC Turning
CNC Turning is a manufacturing process in which bars of material are held in a chuck and rotated while a tool is fed to the piece to remove material to create the desired shape. A turret, with tooling attached is programmed to move to the bar of raw material and remove material to create the programmed result. This is also called [subtraction machining" since it involves material removal. If the center has both tuning and milling capabilities, the rotation can be stopped to allow for milling out of other shapes.
The starting material, though usual round, can be other shapes such as squares or hexagons.
Depending on the bar feeder, the bar length can vary. This affects how much handling is required for volume jobs.
CNC lathes or turning centers have tooling mounted on a turret which is computer-controlled. The more tools that that the turret can hold, the more options are available for complexities on the part.
CNC`s with [live" tooling options, can stop the bar rotation and add additional features such as drilled holes, slots and milled surfaces.
Some CNC turning centers have one spindle, allowing work to be done all from one side, while other turning centers, have two spindles, a main and sub-spindle. A part can be partially machined on the main spindle, moved to the sub-spindle and have additional work done to the other side this configuration.
There are many different kinds of CNC turning centers with various types of tooling options, spindle options, outer diameter limitations as well as power and speed capabilities that affect the types of parts that can be economically made on it.
CNC Grinder
CNC grinding is a machining technology which utilizes a high-tech ultramodern type of grinding machine known as a CNC grinding machine. The CNC technology, also known as Computerised Numerical Control, is an automation process that utilizes computer programs to control grinding machines.