Ballast 压载物。在船舶空载时使船舶稳定便于操作而装载的重物，通常是海水。这时船舶航行称为In ballast，便于航行。
未详细示出的泵送装置36浸没在压载物34中。
Pumping means 36 that are not shown in detail are immersed in the ballast 34.
如果通风不畅，压载物的线路板会如同被煎过似的坏掉。
If not ventilated properly, their ballast circuitry can get Fried enough to fail.
这些早期的报废，通常由CFL ' s的电子压载物的失败所引起。
These premature deaths were usually caused by a failure of the CFL's electronic ballast.
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