a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry
例句
PD: by the way, where they are links of unloading?? 顺便说一句，他们在哪里是链接卸载?
Avoid jargons/acronyms such as "PD" (i.e. 避免使用术语和缩写。
I pdn't learn it until yesterday. 直到昨天我才知道这件事。
I'm going to the theatre with PD at 19: 30 on 14th May. 我将于5月14日晚上7点半和pd一起去看戏。
Ship Onosokki to PD to do the test using PD DEK as reference. 运成都将要使用的助焊剂测试仪到上海做测试.
The ratio of Pd(II) to P-BPF was 1:3 in the Complexes. 三元络合物中钯与显色剂之比为1:3。
