Well, we've seen a formula, for example, for a horizontal plane, or for something that's parallel to the yz plane or the xz plane.
我们已经学过一个公式，它是关于水平面的，或者某些平行于yz平面或xz平面的平面。
OK, and for a given value of x, what we will do is we'll slice our graph by this plane parallel to the yz plane.
对于给定的x，我们要做的就是，用平行于yz平面的平面去切图像。
After adding the synergist YZ - 905 to a spraying fertilizer, the fertilizer's stability, wettability, permeability, and so on can be raised.
叶面肥复配y Z - 905助效剂后，叶面肥的稳定性、润湿性及渗透性等得到提高。
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