Lead oxide in the glass envelope of BlackLight Blue (BLB) lamps.

蓝黑灯管（BLB）玻璃外罩所用的氧化铅。

Lead oxide in the glass envelope of Black Light Blue ( BLB ) lamps.

蓝黑灯管 ( BLB ) 玻璃外罩所含的氧化铅.

The bacterial leaf blight (BLB) is an important vascular disease to irrigated rice and may cause substantial yield loss under serious conditions.

白叶枯病系水稻一重要维管束型病害，严重感染将可能导致明显减产。