Find the gradient. Find an approximation formula.
求梯度和近似公式。
The formula for computing the recommended spacing to obtain an even temperature gradient on the product being heated is shown in Figure 3.
为了得到加热产品的更合适的温度梯度，具体的计算间距的公式见图3。
The formula for computing the recommended Element spacing to obtain an even temperature gradient on the product being heated is shown in Figure 4.
通过间距计算公式得知加热产物温度梯度，具体详见图4。
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