单词巩固1 what [hwɔt] pron 什么2 is [iz] v 是3 what's [hwɔts] what is 的缩写形式4 your [juə] pron 你的,你们的5 name [neim] n 名字6 my [mai] pron 我的7 I
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X荧光分析仪 Xray flourescence analysis 草图 draft安装图 installation drawing 转速计\流速计 tachometer扒平螺旋 raking screw 测温枪 temperature detect rod白铍 white ma