[Plumps]

rubens51 is right! It's an (emergency) passenger compartment! For Officers more precisely! I translated thz page from Chinese to English using Google..

It says:

.In the Ju 87D-2
两侧机翼安装人员运输舱的应急运输型Ju 87D-4 型为鱼雷机，但是仅使用Ju 87D-1 改制出一架供测试。 Installation of officers on both sides of the wing transport emergency transport module type Ju 87D-4 model as a torpedo plane, but use only the Ju 87D-1 conversion out of one for testing. 之后D-4 型发展为Ju 87E 型，在利用B 型和D 型改装测试之后，容克斯公司在1942 年夏季得到了115 架Ju 87E 鱼雷机的订单。 After the D-4-based development for the Ju 87E type, in the use of B-and D-modification testing, Junkers company in the summer of 1942 has been 115 Ju 87E torpedo aircraft order

This is ingenuous and very clever! Only Germands could think about this! Gosh...I'm on the lookout for more original news like this...

Now we can play Flight Simulator with the Lutwaffe! :-)

Though the Stuka must be really a pain in the *ss to fly with such a load (1 pilot, 2 officers, 1 rear gunner= 4 ?) Or 1 pilot, 1 officer...Or 1 pilot, 2 officers only...Whatever...

What are "Germands"?? And why should it be a problem to fly with four people when this plane with a normal crew can easily carry 500kg bombs?? Or are you sujesting that the Germans of that time all weighed over a 100kg per person?? I would say this is a weird protype. Definately not something in standard service. If that where the case a lot more picture material would be known. I think most fans of German planes would prefer a flyable He177 or a Do 17 more than another oddball plane.
Just my opinion.