英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
summarise查看　summarise　在百度字典中的解释百度英翻中〔查看〕
summarise查看　summarise　在Google字典中的解释Google英翻中〔查看〕
summarise查看　summarise　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • r - Count number of rows by group using dplyr - Stack Overflow
    I am using the mtcars dataset I want to find the number of records for a particular combination of data Something very similar to the count(*) group by clause in SQL ddply() from plyr is working
  • r - dplyr summarise_each with na. rm - Stack Overflow
    Is there a way to instruct dplyr to use summarise_each with na rm=TRUE? I would like to take the mean of variables with summarise_each("mean") but I don't know how to specify it to ignore missing v
  • summarize () deprecated in R. What to use instead?
    Returning more (or less) than 1 row per summarise() group was deprecated in dplyr 1 1 0 ℹ Please use reframe() instead ℹ When switching from summarise() to reframe(), remember that reframe() always returns an ungrouped data frame and adjust accordingly Call lifecycle::last_lifecycle_warnings() to see where this warning was generated
  • Aggregate summarize multiple variables per group (e. g. sum, mean)
    By default, summarise() drops the last level of grouping, so all the examples above would still be grouped by year To drop all grouping, you can add an ungroup() call, or set groups = "drop" in the summarise() call





中文字典-英文字典  2005-2009