The Mach layer at the bottom of the kernel is visible in userspace, but not directly used by most developers outside Apple.
内核底层的Mach层对于用户空间层（userspace）来说是可见的，但是却不能被大部分非苹果公司的开发者直接运用。
When the light is on, or white, the image is visible. When the light is off, or black, the layer can't be seen.
当在灯光下或白天，图像是可见的。当在灯熄或黑夜下，图像时不能被看见的。
This is the layer that is most visible to users and application providers.
用户和应用程序供应商看到最多的就是这一层。
Generally speaking, both blocks and plates are more effective if made from clear polycarbonate or acrylic blocks so that the print image is visible down through to the fabric layer.
一般来说，如果制成由透明聚碳酸酯或丙烯酸类的块，使打印图像是可见的向下通过向织物层两个块和板是更有效的。
At the middle of the day, bright sunshine in the glazed tile, crystal, so that the Duke was covered in a layer of bright gold, even from the star Luocheng City overlooking is faintly visible.
此时日正当中，明媚的阳光洒落在晶莹的琉璃瓦上，令整座公爵府都蒙上了一层耀眼的金色，哪怕从星罗城城头眺望也是依稀可见。
My view is that Lean is several layers deep. The most visible layer is its set of practices.
我认为精益有几个层次。
Tip: to test if the small pattern is integrated in the background pattern, you can make its layer invisible and then visible again.
提示：测试对齐背景图案的小图案，可以使这一层隐藏，然后再次可见。
Another trick is to hide the layer containing the Make Live object as the function is still active even though the model is hidden and I can work with only one visible instance of Taho.
另一个窍门是隐藏层包含的功能使活动对象仍处于活动状态的模型，即使是隐藏的，我可以只处理一个可见的塔霍实例。
The thermosensitive ink layer 102 becomes transparent by heating and the figure 104 on the substrate 101 is also visible.
而 且，能观察到加热时感热墨水层（102）变透明，基材（101）上的图 案（104）进一步重叠。
The thermosensitive ink layer 102 becomes transparent by heating and the figure 104 on the substrate 101 is also visible.
而 且，能观察到加热时感热墨水层（102）变透明，基材（101）上的图 案（104）进一步重叠。
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