Why are the lupanine derivatives bitter ?

为什么白金雀儿碱的派苦的？

Examples of ''ablaut'' as a grammatical marker in Latin are the vowel changes in the perfect stem of verbs.

例如在日耳曼语强动词中的元音变换印欧动词变形范例的直接派。

A new concept is proposed,under which by utilizing a proven simple-cycle marine gas turbine a type of intercooling-cycle high-power marine gas turbine has been derived.

提出利用成熟的简单循环用燃气轮机将其派为一型间冷循环大功率用燃气轮机的新构想,并且原发动机燃气发器的通流结构大保持不变,以继承原机的可靠性。