pdd
abbr.
predental discomfort 前齿骨的疼痛;
probability distribution density (function) 概率分布密度（函数）;
例句:
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Method: Compare APP regimen ( ADM + PYM + PDD ) with VPP ( VCR + PYM + PDD ) regimen.
方法: APP方案 ( ADM+PYM+PDD ) 与VPP方案 ( VCR+PYM+PDD ) 对照.
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You must develop the PDD layer specifically for your target platform.
针对自己的目标平台,开发者必须要开发自己的PDD层.
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But for someone with PDD, these are exactly the type of things that happen.
但是对于一个PDD患者, 这些正是可能发生的事情.
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However, the report also said that PDD needed to be more widely rolled-out across the company.
来自BBC