1: Hi! Everybody is good, today we must say the subject is the simple machine, introduced in detail by way of teacher, everybody should understand the simple machine initially! 2: Yes! 1: That we discuss the release lever as well as the screw today! 2: Without the question, all topics cannot baffle me! 1: That ask that was who said: “for me a standpoint, I can support the world”? 2: I know the answer! Is the archimedes, is right? 1: Not wrong! Traded you to test me! 2: ! What thing did the archimedes invent to enable the farmer to be possible to carry water by a quicker speed? 1: You might test but actually me! 2: The answer is Archimedes's screw draws water! 1: Ha! Your science is not reads false! 2: However, can you tell me the release lever to use for the why for what purpose? 1: The release lever may let the person time-saving hard sledding perhaps reduce effort time-consuming! We use generally the chopsticks, are release lever's one kind! 2: So that's how it is! Then, the scissors are also one kind of Luo! 1: ! Fierce! 2: That screw? 1: The spiral work is only two goods unions! 2: No wonder the screw must be called the screw! 1: Not wrong! 2: Then you knew that the application simple machine may increase the strength, the change strength function direction or increases the displacement? 1: Does not know Ye! 2: Changes simple machine's geometric parameter according to this kind of relationship, may cause small or the big input strength and other output strength phase equilibrium! 1: Ha! You good understand! 2: The helical motion may achieves because of revolving and the translation. These movement's union, may achieve accurate and the complex localization! 1: Looks like me to very much study! 1, 2: Thanks everybody! Our report this conclusion!