"Damn...it actually exploded..."

The old cat sat on the chair, looking gray and gray.

"Don't move." Tang Yue held the cat's head, plucked off a broken whisker stuck to his cheek, and then helped it straighten the messy and blackened cat hair.

"I...my beard..."

The old cat burst into tears.

"What did you do? Did you forget the explosion limit of methane?" Tang Yue asked.

"This is because I was careless... There was a problem with the flow rate control of the propellant and liquid oxygen, which caused the oxygen not to be completely burned out, so there was residual oxygen in the pit. When I climbed onto the rover and opened the pressure relief valve and came down again, the oxygen in the pit was

The concentration of methane gas has exceeded five percent." Old Cat shook his head, "So it will explode at one point."

Tang Yue patted the old cat on the shoulder, asking him to accept his sorrow. After all, it was not a real cat, and its beard was broken and could not be revived.

The old cat really cares about its few beards, and has to be combed and maintained every morning. Tang Yue even saw the old cat secretly gluing its broken beard with 502 glue behind his back.

Unfortunately it failed.

This small explosion temporarily interrupted their work of producing fresh water. Two layers of plastic film and the water tank were blown away. The plastic film was useless and shattered into strips like a burst balloon. Tang

It is necessary to replace the film with a new one. The plexiglass sink is very strong and is not a serious problem. It can still be used.

Tang Yue and Lao Mao learned their lesson and learned that two people must be present when preparing fresh water in the future.

Otherwise, methane will mix with the oxygen in the pit and easily reach the explosion limit.

Tang Yue held a piece of biscuit in his mouth and moved the large sink on the floor to the table. There were about ten liters of fresh water here. Because it was condensed water, the water contained almost no impurities. This was what they had all morning.

As a result of his work, Tang Yue had a new supply of fresh water for the first time after ninety-nine days on Mars.

"Ophiopogon japonicus, the water has fallen. What should we do next?" Tang Yue asked, "Should we go outside to dig mud?"

The girl, wearing blue overalls, appeared on the screen, "Have you got the fresh water?"

Tang Yue pointed to the sink on the table.

Maidong was pleasantly surprised, "He is indeed Mr. Cat."

"What Mr. Cat?" Tang Yue's old face pulled, "This is my credit, okay? Your Mr. Cat almost blew up the condenser."

"Okay, okay, Tang Yue, thank you for your work." Maidong smiled and clasped his hands, "Let's get back to the topic. You can't go directly outside to dig soil. I took samples when I was on the Kunlun Station. Most of the soil on Mars

It cannot be used directly to grow crops because the content of chlorine, chlorate and perchlorate is too high... To put it bluntly, it is too dry and too salty. This kind of soil-based tomatoes cannot survive. You need to find slightly better basic conditions.

soil."

"Still looking for it?"

"Of course I have to find one." Ophiopogon japonicus nodded, "Have you ever seen anyone planting tomatoes in saline-alkali soil?"

"Then is there any way we can reduce the salt content in the soil? For example, filter extraction or something..."

Ophiopogon japonicus spread its hands, "Most extraction solvents are toxic, and I think it's too troublesome to do this because the amount of soil you need to use is huge. In addition, the biggest question is, do you have the conditions?"

"Do we have this condition?" Tang Yue turned to look at Lao Mao.

The old cat held a broken and burnt beard in its paws, with a dull expression.

Tang Yue turned his head back.

"Okay, let's look for it."

·

·

·

"I suggest you use Mars Stray Dogs to sample evenly within a radius of one kilometer with Kunlun Station as the center."

Tang Yue put on the Mingguang Armor and opened the garage with Lao Mao.

They don't often use the Mars Stray Dog. The Mars Rover is actually very troublesome to use and consumes too much energy. It is the most power-consuming thing in the entire Kunlun Station. The Mars Stray Dog is essentially a tractor - it is used by people.

It is called a geological survey vehicle because it tows a geological experiment cabin behind it. If you replace the experimental cabin with a trash can, then the stray dog ​​is a Mars garbage truck.

The Martian Stray Dog looks tall and mighty, but in fact it is a battery car, powered by a battery, driven by an electric motor, without suspension, and as slow as a turtle crawling. It can surpass a bicycle at full speed, and its off-road capability is basically zero.

When the scientific expedition team was still there, it often happened that stray dogs got stuck in the sand pit and couldn't move, and the crew had to get out of the car collectively to push the cart. This was actually a short-legged dog.

When this vehicle was designed, it was not designed for long-distance transportation. Its only function was to move the experimental cabin to facilitate field inspections of the geological experimental cabin. So far, the farthest distance traveled by a Martian stray dog ​​does not exceed 20 kilometers.

.Theoretically, a stray dog ​​can travel thirty kilometers on a single charge - after running, it has to stop and recharge.

But in fact it has never reached this theoretical value. Lao Wang once commented that the Mars stray dog ​​"charges for five hours and works for half a minute."

Even more OPPO than OPPO.

"Approximately how many samples should we take?"

"Tang Yue, you can draw a quadrat." Maidong replied, "But I think taking about twenty samples is enough."

"Then find a more suitable soil among these twenty samples?"

"Yes."

Old Mao opened the car door and got into the driver's seat, and Tang Yue climbed up too. The Martian Stray Dog's cab was not airtight, so the crew had to wear extravehicular space suits.

The driving method of Mars Stray Dog is very simple. There is a steering wheel plus brake and accelerator. Press the accelerator to accelerate and the brake to decelerate. There is a start button to start when pressed, and a shutdown button to shut down when pressed. I don’t know which lunatic is still on the console.

It is marked with the words "A happy journey begins from here!", and then an arrow points to the start button, which is a pure retarded style.

No one would steal the battery car on Mars anyway. If someone really stole the stray dog, then it would not be a simple theft, but an interstellar diplomacy incident.

There are also a few instruments that display power, location, and temperature. They are comparable to the bumper cars in an amusement park. They are also the kind that cheerfully say "Dad's dad is called grandpa" when you press a button.

The old cat put on his seat belt and took a look at the remaining power. The battery was fully charged. The Mars Stray Dog was always on standby and would be fully charged every day.

This amount of electricity should be enough for them to run for twenty or thirty kilometers.

"Mars Stray Dog, start." The old cat pressed the start button, and the body of the Mars rover trembled slightly.

A few seconds later, the car stalled again.

The old cat was stunned for a moment.

"I think it might be because you didn't call it by its name and it wasn't happy." Tang Yue said, "You can try starting it again."

"Mars Rover, start."
Chapter completed!