abbr. ultrasonic bonding machine 超声（波）焊接机；unit bill of material 材料单单元
中文词源
ubm 用法和例句提示：点击例句中的单词，就可以看到词义解释
提示：点击例句中的单词，就可以看到词义解释
The multiple suppliers in the ipad suggest apple is more actively trying to mitigate such risks , says allan yogasingam , a ubm technical marketing manager .
On one closely watched topic , the ottawa-based firm ubm techinsights concluded that samsung electronics co. manufactured the apple-designed a5 processor inside the ipad 2 , continuing the pattern from previous apple devices .
