These gases may dissolve in water in the atmosphere to form weak acids.
这些气体溶于大气层中的水汽，形成弱酸。
The "optimum" weak form is the one for which the trial and test Spaces coincide.
“最优”的弱解是在测试空间和试验空间重合时得出的。
The "optimum" weak form is the one for which the trial and test Spaces coincide.
“最优”的弱解是在测试空间和试验空间重合时得出的。
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