衡量液滴在平整固体表面润湿程度的接触角θ的Young氏公式为:σl-gcosθ =( )<br>· <img src="/lqwvjeImg/fd/fd95cdf7a107a2fe4420b49220d58c3a.jpeg"style="width:67px;height:32px;"><br>· <img src="/lqwvjeImg/1b/1b8084b8752b12f52fe33262c805204b.jpeg"style="width:68px;height:35px;"><br>· <img src="/lqwvjeImg/09/091c55bc5aae7db931f2ea7dd8363257.jpeg"style="width:61px;height:33px;"><br>· <img src="/lqwvjeImg/6e/6e6e2618d3b37c9ddade67815222b507.jpeg"style="width:58px;height:34px;">