Passive sonar: Passive sonar technology refers to sonar passively receiving radiated noise generated by ships and other water targets and signals emitted by water acoustic equipment to measure the orientation and distance of the target. It evolved from a simple hydrophone. It listens to the noise emitted by the target and judges the position and certain characteristics of the target. It is especially suitable for occasions where it cannot make sound and expose itself but also needs to detect the activities of enemy ships.

Duke must have wanted to take the initiative, but the problem is that even if he keeps instilling black technology into the scientists of Iron Fort and Stormwind City. The industrial level of this era cannot be achieved, but it cannot be achieved.

Like a submarine, the sealing technology of this era is simply not up to standard. The marine steel plate made of willow nails and welded is still a good match on the water, and when you get to a place with more underwater pressure, you will play with fountains everywhere. That experiment almost cost two senior scientists and a bunch of engineers.

He could only settle for the second best and made the coastal sonar in passive sonar. Of course, in order to make the positioning clearer, he asked someone to lay out a sound wave propagator in a place where the water was not too deep.

Duke controlled Mark Dooku, while pretending to be smiling, and turned the buttons of the sonar device.

In the amplifier, you can hear the very regular and rhythmic "Drip...Drip...Drip..." sound.

Duke continued to explain: "This is the sound wave we actively emit. As long as we listen to whether there are clutter in its echo, we can roughly determine the position and number of enemies..."

Before Duke finished speaking, a fierce sound suddenly came from the loudspeaker: "Dong, dong, dong!"

Duke was stunned when he heard this.

A bunch of dwarfs next to him who had a very big idea immediately made various high-profile statements:

"This sounds so realistic! It feels like something is jumping in this thing." Brian spoke first.

"Yes! Could it be the footsteps of the demon walking under the water?" Comrade Kudland opened his mind.

"Well, most of the demons don't know how to swim. They do walk under the water. But this sound is not too sharp and clear. Shouldn't the sound at the bottom of the water be a little blurry?" Brian argued against it.

Only Duke's face turned blue.

As a senior time traveler who has watched classic submarine war videos such as the u-571, he certainly knows that this has nothing to do with Sonar.

The system discovered it with a scan. He treated it as a treasure and had many guards in the sonar system...

God's mother is actually a group of little iguanas.

Many Alliance soldiers must have seen these annoying little goblins on the Drano Continent.

Although these little iguanas that are only the size of a palm do not have strong attacks or strong bodies, they look easy to bully, they are always in groups, which will remind you of a nostalgic species on the continent of Azeroth. That's right, fishman, oh wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow wow

But these little goblins are not as annoying as fishman. When you first see iguana people, they still feel a little scary and terrible. They are a bit like the head of a frog, their pointed teeth, small eyes, rough four-finger claws and their obscene body shape. However, when you see too much on the Drano Continent and gradually get used to it, you will find that they are a little cute... It's weird!

Duke is so popular that Sonar is his treasure. It was not sure that Vasqi was Saiga when he was not sure, Sonar is his ultimate killer weapon to deal with Naga.

Who dares to put a group of little iguanas in my latest invention???

There is only one answer

"Yerel" Duke's roar sounded throughout the water shore.

The hoof, who was standing not far away, heard Duke's roar, but he didn't know if it was wrong. His whole body stiffened for a full second as if it was electric shocked, then shrank his head and wanted to hang around in the crowd.

The problem is that this guy is also confused. He didn't realize that there are short people around him. She is more than one head taller than the short!

This stupid look that made Duke even more angry was even more angry, and he flashed over at that time.

"Ah," Yiriel screamed, turned around and ran away.

run!?

You are still paralyzed!

Duke was quick-witted and grabbed the tail that was seriously behind the hooves with one hand.

"Huh" The hoof was stiff again as if it was electric shocked.

Duke hugged the waist of his hoof and carried her up like a rice bag: "Come on, take apart the sonar system. First, clean up the little iguana inside. I will teach this idiot a lesson first!"

Hoof screamed, and the Holy Light Education of Karabo's apprentice made her dare not lie: "No, no, I know I'm wrong! I saw your big iron box empty and thought it was useless. It just so happened that guy Selin made me angry last time, so I wanted to bring him some little iguana people. I really don't want to destroy your important new equipment."

Unexpectedly, Duke became even more angry: "Your fucking spoof ruined the latest invention of Marcus Future Technology Co., Ltd.! It's useless to beg for mercy. This time I must give you an unforgettable lesson."

Duke strode with his hoof, rushed into a shore uninhabited room, sat down directly, pressed his knee against his hoof's lower abdomen, grabbed her tail, and slapped her hard on her butt.

"Ah! Ah! Ah no! Don't spank!" Yiriel cried! She really cried! She had never been beaten by anyone before she was so old.

Next to the utility room, everyone was covered in black thread.

What's the matter with this combination?

Even the garrison officers of the Draenei people didn't know what to say. They had seen the Alliance's high technology. For the Draenei Universe Technology, the Alliance's technology is very superficial. The problem is that the Draenei people's own technology has also been lost a lot in the 25,000-year escape.

Because Delaney scientists died in various accidents, most of their knowledge and technology were already faulty. Many machines were no one knew how to use them, so their most reliable weapons were warhammers and holy light.

In this case, his contact person made trouble and ruined his high-tech device. Being beaten up was a small punishment. According to the military law of the alliance, Mark Dooku was going to cut off Yiriel, and they didn't know how to plead.

Five minutes passed, Duke came out angrily, followed by a hoof covering his red and swollen butt.

"Hmph! Do you still dare to do anything randomly?" Du Mouke asked angrily.

"Woooooooooooooo!" The hoof just cried.

"I'm asking you!"

"Woooo! I don't dare." The aggrieved look was like a young wife who had just been teased by hooligans.

Duke didn't know at this moment, because he beat up Tiaozi, and even let Tiaozi cover his butt as soon as he saw him...
Chapter completed!