Wide domain mainly refers to our Whatsapp Mobile Number List commonly used baidu, google, bing, sogou and so on. When you need to find something, just go here and enter keywords. It should be pointed out here that it is necessary to spend some time analyzing and summarizing the differences between the results of different Whatsapp Mobile Number List search engines, so as to have a general understanding, in order to improve the search efficiency. For example, in the same search for the wms system, if you compare the content of baidu and google, you will find some differences. Baidu-wms system google-wms system the content of the two searches is different, and some keywords are much different.
I usually use baidu to search for chinese, or keywords Whatsapp Mobile Number List that are popular. Use google to search for some professional terms or professional terms with english, or some websites that are not crawled by baidu. Use sogou Whatsapp Mobile Number List search to search wechat official account and wechat official account content. Use bing as google's backup (sometimes use this when google doesn't go up) or search for some beautiful pictures (microsoft's wallpapers are so pretty). I will not do too much summary about the differences between various search engines.
If you want to learn to search for information Whatsapp Mobile Number List and content efficiently, you must learn to switch search engines . 2. Narrow domain search narrow domain search means that crawlers crawl less or more specific Whatsapp Mobile Number List content than wide domain search. For example, our common narrow domain is the search of wechat, the search of zhihu, and the search of toutiao. Some of these contents can be searched from a wide domain, and some cannot be found, so if you search for a certain keyword in baidu or google and find that the amount of information is not enough, then you can try these narrow domain searches.