This does not mean the kernel USES that much physical memory, only that it has that portion of address space available to map whatever physical memory it wishes.
The 3d images from LRO orbital photography are being used to make an exact digital topographic map of the moon, and this is fact may tweak the mean elevation value.
LRO轨道摄影机拍摄的3d图像被用作制作月球精确数字地形图，而这可能会调整平均高度值。
3
Vasopressors are used in shock-states to increase mean arterial pressure (MAP) and improve distal tissue perfusion. Additionally, some agents have effects on the heart to augment cardiac output.