WebApr 12, 2024 · 字典编码(dictionary encoding):用来优化具有少量不同值的列。为唯一值创建字典,并用指向字典的索引替换实际数据。这可以显著减少存储数据量。 Run-length encoding(RLE):用来优化具有重复值的列。RLE 不是单独存储每个值,而是存储值及其连续重复的次数。 WebMar 17, 2024 · A female given name from Ancient Greek; a flower name used since the end of the 19th century. Persia tells Iris she is named for something special: the iris of the eye. "I thought I was named for a flower," Iris says, disappointed. "An iris is a flower, of course," Persia says, smiling, "but it's this other, too. Our secret.
Iridotomy Definition & Meaning Merriam-Webster Medical
WebDefinitions of iris. noun. muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye. … WebApr 9, 2024 · iris in American English (ˈaɪrɪs ) noun Word forms: plural ˈirises 1. a rainbow 2. a rainbowlike show or play of colors 3. the round, pigmented membrane surrounding the pupil of the eye, having muscles that adjust … fall in hole gif
Data Dictionary - American Academy of Ophthalmology
WebMerriam-Webster's Law Dictionary: Legal Terms in Plain English Est. 1828 Law Dictionary Search more than 10,000 legal words and phrases for clear definitions written in plain language. An easy-to-understand guide to the language of law from the dictionary experts at Merriam-Webster. Browse the Legal Dictionary a b c d e f g h i j k l m n o p q r s WebMay 5, 2013 · Iris Versicolour c. Iris Virginica The code needs to have an output file named iris-summary.txt. The output file should give the average values of the sepal and petal lengths and widths. WebJul 17, 2024 · Both methods of accessing the dictionary are equivalent. The main advantage of accessing the iris dictionary via its 'species' key (e.g. iris['species']) is that the specified dictionary key can have spaces.. For example, you can access the iris dictionary with a 'plant color' key like so: iris['plant color'].However, you cannot access the iris dictionary via … controlling the cohesion of cement paste