үзілу желісі

үзілу желісі

A line above which the roof of a coal mine is expected to break. It follows the rear edge of the pillars.

0 0

ปรับปรุง

เพิ่มภาพ

ส่วนหนึ่งของคำพูด: noun
คำเหมือน:
Blossary:
อุตสาหกรรม/ขอบเขต: Energy
Category: Coal
Company:
ผลิตภัณฑ์:
ตัวย่อ-อักษรย่อ:

เพิ่มสู่อภิธานศัพท์ของฉัน

ภาษาอื่นๆ:

คำศัพท์ที่เกี่ยวข้อง

жарылғыш зат

Energy; Coal

A material that is made of a fuel and an oxidizer. It's usually not very sensitive and requires a booster explosive or secondary explosive to ignite it.

жарылғыш

Energy; Coal

A device containing a primary explosive that is sensitive to heat and shock. The blasting cap is used to start the denotation of the secondary explosive, which for safety reasons ...

электр-жарылғыш желі

Energy; Coal

An electric circuit that is used to detonate a primary explosive in a blasting cap.

бұрғы ұңғымасы

Energy; Coal

A large or deep hole that's been caused by drilling.

тосқауыл

Energy; Coal

A material that is used to partition a mine for air ventilation. Can be made from concrete, plastic, cloth or other materials.

желінің үзілуі

Energy; Coal

An opening that is made through pillars that allows for ventilation.

Terms in the News

Featured Terms

Mankent2

0
Terms
0
คำศัพท์
11
Followers

อุตสาหกรรม/ขอบเขต: Chemistry Category: General chemistry

графен

After separating from graphite, graphene is the world's thinnest and strongest material. This one-atom, carbon-based material can conduct electricity ...