请问:primary secondary

请问:primary secondary primary and secondary primary and secondary markets是什么意思 翻译Light source :Primary U3500,Secondary 什么是primary data和secondary data? Primary Master是什么啊?Primary Master,Primary Slave,Secondary Master,Secondary Slave这些都是什么,和启动有关系吗, primary secondary tertiary quaternary .还有继续下去的吗?求越多越好 primary master primary slave secondary master secondary slave开机后出现这四行字就不动了primary master primary slave secondary master secondary slave有硬盘和光驱.但就是不能开机.只能Ctrl+Alt+Del重启.重启后还是这样.. 初级是primary 中级是secondary那高级怎么说? to have a set of primary and secondary objctive 什么是primary demand he secondary demand?primary demand expansion effect of promotion如何解释? secondary secondary secondary secondary school是指的什么?原文是i went to to a primary school,then secondary schoool 英语翻译3500KVA,3 PHASE 11,000VAC Y PRIMARY,3300VAC DELTA SECONDARY OUTDOOR,LIQUID FILLED,PRIMARY TOP MOUNTED BUSHING,SECONDARY CONNECTION BOX. 请问老师这句话的表达是不是有点儿问题?If primary language teaching is not standardised,secondary schools could be faced with a great variety of levels in different languages within their intake,resulting in a classroom experience whi 英语语法问题,请问星号中间“it” 指代什么?求高手指教,感激不尽Secondary stress could be divided into membrane and bending components,just as was done for primary stress,but after the removal of local membrane stress to the pr