英语词汇black alum怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
Four prototype HALTT (" helicopter Alert and Threat Termination ") sensors are now on board Black Hawk helicopters and deployed to Afghanistan, as Danger Room alum Nathan Hodge reports.
四件HALTT(直升机预警与威胁解除)传感器样件目前已装在黑鹰直升机上，应用于阿富汗，如险情办公室Nathan Hodge所报道的。
2
In potash it turns black, but in alum nothing happens until you bring it to the boil, then purple colour comes flooding out.
在碳酸钾中，它变成黑色，而在明矾中一开始却什么反应都没有，直到煮沸后紫色都溢出来了。

单词	black alum
释义	black alum 简明释义黑矾网络释义 1 ?黑矾 ... black absorber rod 黑吸收棒 black alum 黑矾 black annealing 初退火，粗退火 ... 双语例句 1 Four prototype HALTT (" helicopter Alert and Threat Termination ") sensors are now on board Black Hawk helicopters and deployed to Afghanistan, as Danger Room alum Nathan Hodge reports. 四件HALTT(直升机预警与威胁解除)传感器样件目前已装在黑鹰直升机上，应用于阿富汗，如险情办公室Nathan Hodge所报道的。 2 In potash it turns black, but in alum nothing happens until you bring it to the boil, then purple colour comes flooding out. 在碳酸钾中，它变成黑色，而在明矾中一开始却什么反应都没有，直到煮沸后紫色都溢出来了。
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