另外，你使用的淋浴喷头：一般来说，它应该是在你的下次沐浴中被清洗干净的。那么你在孩子们的浴盆中使用强力清洁剂么？
Also, the shower spray you use: usually these things are designed to be washed off during the next shower. Do you use it in the kids' bathtub?
使用喷墨打印机的喷头将红外吸收墨水铺在聚合物乳胶粉层上，在红外线的热度下乳胶粉会被熔结成固体形状。
It USES inkjet print-heads to deposit infra-red-absorbing ink on layers of polymer powder which are fused into solid shapes with infra-red heating.
使用旋转式喷雾器齿轮驱动或影响锤机制，旋转一圈的喷头。
Rotary sprayers use gear driven or impact hammer mechanisms to rotate the spray head in a circle.
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