DETAILED NOTES ON SEM

維基百科所有的內容都應該可供查證。请协助補充可靠来源以改善这篇条目。无法查证的內容可能會因為異議提出而被移除。You are able to add this in your HTML With all the alt attribute in the img factor, or your CMS could have a straightforward technique to specify a description for an image when you are