如何强制网页始终在iPhone和机器人上以1.0（而不是1.5）的像素比率进行渲染？

For example, by default, iPhones and Androids will automatically zoom the page to attempt to make it fit nicely in the frame if no viewport meta tag exists. Web sites designed for desktops will be zoomed out so they fit inside the small viewport, but obviously the pixels aren't really represented truthfully.For example, by default, iPhones and Androids w