求翻译：这样，在同样的冷、热媒温差下，由于两侧寄生温差会增大热电元件的实际工作温差，而降低效率，甚至导致系统无法工作。是什么意思？

Thus, in the same cold, heat medium temperature difference, because both sides of the parasitic temperature difference will increase the actual working temperature of the thermoelectric elements, which will reduce efficiency and even cause the system to not work.

In this way, in the same hot and cold media temperature difference, the difference between the two sides will increase parasitic thermocouple element of practical work, which will reduce efficiency difference, or even cause the system to work.

Thus, under same cold, heat carrier temperature difference, because the both sides parasitism temperature difference can increase the thermo-element the practical work temperature difference, but reduces the efficiency, even causes the system to be unable to work.

In this way, under the same cold, heat medium temperature, due to parasitic temperature difference on both sides can increase the working temperature of thermoelectric elements, efficiency is reduced, or even preventing the system from working.

正在翻译，请等待...