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（1）本发明公开了一种疤痕修复凝胶及其制备方法，该疤痕修复凝胶按重量份包括以下成分：鄂西蜡瓣花的果实70—90份， 南川冷水花 的花瓣155—175份， 柔软点地梅 的叶片40—60份……
（2）This is why the first wave of fuel cells in cars will likely use an indirect metha nol fuel cell,in which the methanol passes through a mechanism called a “ reformer” ,which extracts the hydrogen.
（3）One chemical called diethylhexyl adipate(DEHA) has received a lot of media attention.DEHA is a plasticizer,a substance added to some plastics to make them flexi ble.
（4）The main task for ERG was the replacement of two large odour control wet chemical scrubbers .
1 如何搜索含有“紧固件”的PDF文件，有几种方式？
2 如何搜索标题中含有“轴承”的网页？
3 如何搜索正文文本中含有“粉末冶金”的网页？
4 请找出百度和搜狗搜索的高级设置界面。
1 在英文数据库中查有关“阳极氧化”方面的文章。
2 搜索题目为“热处理工艺”的文章。
3 搜索关于“背腔式缝隙天线”的图片。