Although they had high hopes when they turned to MDD, many now wonder whether it was just an expensive experiment with limited and gradually decreasing value.
虽然当转向MDD时它们有很高的期望，但是现在许多组织怀疑，MDD是否只是具有有限的，并且逐渐减少的价值的昂贵试验。
When using remote sense, the voltage difference between high force and high sense, and between low force and low sense is usually limited to a specified value.
在采用远地取样时，通常将强制高端和取样高端之间以及强制低端和取样低端之间的电压差限制在规定的数值之内。
Although the sprinklers may be fixed in permanent locations for limited areas of high-value crops, they are usually mounted on either moving or movable lines.
虽然喷头可以被安装在固定的位置为有限面积上的经济作物供水，但它们通常是安装在移动的或可以移动的管道上。
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