Even the famous acid test does not prove too much , since it tests only a subset of the html specification .
即便是最著名的acid测试也证实不了太多东西，由于它只测试了html的子集。
One way to do it is to examine every possible subset of 16 clues to see if any of them lead to a unique solution .
做这件事情的一种办法是检测16线索的每一个可能的子集来确定是否它们中的一些会导致唯一解。
In a pilot study , dr tourassi and her colleagues tested whether a subset of high-entropy mammograms would work as effectively as using the whole database .
By using a subset of wikipedia 's hierarchy of terms , mspoke has been able to get an immediate foundation for its own taxonomy and quickly understand the content of articles it finds around the web .
" We don 't know why plumage colors are confined to this subset , " stoddard said . " The out of gamut colors may be impossible to make with available mechanisms or they may be disadvantageous . "
