ZPA是什么意思

During the development of the limb, Sonic hedgehog ( SHH) protein plays a key role as a mediator of the zone of polarizing activity ( ZPA).

在肢体发育中，SONIC HEDGEHOG（SHH）蛋白作为极化区（the zone of polarizing actiVity，ZPA）的调节因子，发挥着十分重要的作用。

Seasonal variations of time determination of zat, zpa, and Za at Shanghai Observatory

上海天文台ZAT、ZPA、ZA三架仪器测时结果的季节性变化

Or, you can type python zpasspwd. py inituser and follow the prompts.

或者你可以输入pythonzpasspwd. py初始化用户并且跟着提示做.