The results showed indicated that the degradation rate of chlorpyrifos-methyl was closely related to the pH value and temperature of aqueous solution.
结果表明，它在水环境中的降解速率与水环境的酸碱度和温度有关。
参考来源 - 甲基毒死蜱在甘蓝、土壤中的残留动态和水解研究In the condition of the trial , the best dosage of S was 5% of soil weight, making soil pH value with 8.90 reduce to 7.07.5 in one month .
④在本试验条件下得出，在1个月内要想把土壤pH值由8.89降低到7.0～7.5之间，硫磺的最佳用量为土壤的5％。
参考来源 - 酸性物质对石灰性土壤的酸化效果和生物效应研究·2,447,543篇论文数据，部分数据来源于NoteExpress
But alfalfa ground soil PH value were higher than cotton ground.
但是苜蓿地土壤ph值比棉花连作地的高。
Slow granule: can make solution PH value in a certain range of constant maintain the basic material.
缓冲剂：能够使溶液PH值在一定范围内维持基本恒定的物质。
He cannot yet assign a specific average pH value to Alaskan waters, but other data show a clear trend line.
他还不能给出一个阿拉斯加水域平均的PH值，但是其他的资料已经给出了一个明确的趋势曲线。
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