It could be produced under a wide range of pHs.

它可以在很宽的 pH 值范围内生产。

In the late 1960s, an STI contact tracer named Peter Buxtun convinced the PHS to consider ending the study.

在 1960 年代后期，一位名叫 Peter Buxtun 的 STI 接触追踪者说服 PHS 考虑结束这项研究。

When patients died, the PHS would swoop in to study the body by funding funerals in exchange for autopsies.

当病人死亡时，PHS 会通过资助葬礼来研究尸体，以换取尸检。

For example, a study published in 2001 is often touted as showing that special diets can tweak internal pHs but even it didn't actually find much of an effect.

比如说，2001 年发表的一项研究常被鼓吹为证明了特殊饮食可以扭转体内酸碱值，但是并没有发现什么效果。

The PHS collaborated with local doctors and nurses to recruit roughly 400 Black men presumed to have noncontagious late-stage syphilis, as well as 200 non-syphilitic Black men for their control group.

PHS与当地医生和护士合作，招募了大约400名被认为患有非传染性晚期梅毒的黑人男性，以及200名非梅毒黑人男性作为他们的对照组。