有任何疑问或需要帮助，请通过邮件或社交平台联系我们。您的反馈是我们改进的重要动力。 In one experiment, Lavoisier observed that there was no General rise in fat when tin and air have been heated in the closed container.[22] He observed that air rushed in when he opened the container, which indicated that part of the trapped air had been consumed. He also observed https://georger370lvc5.wikipublicity.com/user