What is the largest hole on Earth?
Chuquicamata opencast mine
What are holes in the body called?
An orifice is an opening or a hole, most often in the body, such as your mouth or your nostril.
What is female reproductive system parts and functions?
The female reproductive system provides several functions. The ovaries produce the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur.
What is drill walking?
Drill walking. A common issue when using longer deep hole drills (particularly those in excess of 12× diameter) is the drill “walking” across the part. When attempting to enter the part, because the drill is rotating, it will want to move across the surface of the part rather than drilling downward into it.
How does a jumbo drill work?
Description. A drilling jumbo consists of one, two or three rock drill carriages, sometimes a platform, which the miner stands on to load the holes with explosives, clear the face of the tunnel or else. The carriages are bolted onto the chassis, which supports also the miners cabin and of course the engine.
What are the 3 functions of female reproductive system?
Its functions include producing gametes called eggs, secreting sex hormones (such as estrogen), providing a site for fertilization, gestating a fetus if fertilization occurs, giving birth to a baby, and breastfeeding a baby after birth. The only thing missing is sperm.
Which drilling is used for great depth?
Gun drilling was originally developed to drill out gun barrels and is used commonly for drilling smaller diameter deep holes. The depth-to-diameter ratio can be even greater than 300:1. The key feature of gun drilling is that the bits are self-centering; this is what allows for such deep accurate holes.
What is a deep hole?
A deep hole is defined by its depth-to-diameter ratio (D:d), and typically holes greater than 10:1 are considered deep holes. Deep hole drilling is used in a variety of materials from aluminum to super-alloys, and is capable of achieving tight diameter control, straightness, and superior surface finish into workpieces.
What are the 3 holes?
If you’re unsure (no judgement), the correct answer is three: the urethra, the vagina and the anus.
What’s another word for a hole?
SYNONYMS FOR hole 1, 2 pit, hollow, concavity. 3 den, cave; lair, retreat. 4 hovel, shack.
What is an orphus?
An orifice is any opening, mouth, hole or vent, as in a pipe, a plate, or a body. Body orifice, any opening in the body of a human or animal. Orifice plate, a restriction used to measure flow or to control pressure or flow, sometimes given specialised names: Calibrated orifice, used to control pressure or flow.
How many holes does human body have?
Does urine and period blood come out of the same hole?
Pee and period blood do not exit the body from the same place – urine exits from the urethra which has sphincters so can be controlled while period blood exits from the vagina which does not have sphincters so cannot be controlled.
What are the four main parts of the female reproductive system?
The female internal reproductive organs are the vagina, uterus, Fallopian tubes, and ovaries.
What is deep hole drilling and what are its difficulties?
Deep hole drilling is the process of machining holes ten times deeper than the hole diameter. The main challenges with deep drilling are the efficient coolant control and metal chips removal. Failure involve a waste of time and material.
What happens when a female is sexually excited?
Often (but not always), when a person with a vagina is sexually excited, blood flow increases to their genitals so that the vulva and clitoris swell and the vagina lubricates itself, which is called “getting wet.” This lubrication helps with friction and makes vaginal sex more comfortable and enjoyable.
How many holes are in a straw?
Which part of girl is more sensitive?
What is L D ratio in drilling?
The L/D ratio is the ratio of the flighted length of the screw to its outside diameter. The ratio calculation is calculated by dividing the flighted length of the screw by its nominal diameter.
What are the parts of a woman’s body?
- Vagina. As mentioned above, the vagina is the canal that connects the vulva with the uterus.
- Cervix. The cervix is the lower portion of the uterus.
- Uterus. Share on Pinterest The uterus holds the fetus during pregnancy.
- Fallopian tubes.
What is deep hole drilling machine?
A deep hole drilling machine is a metal-cutting machine tool, designed to produce very deep, precision holes into virtually any metal. Dedicated deep hole drilling machines provide the tooling support, coolant delivery, and process feedback that allow manufacturers to achieve their deep hole drilling goals.
How does a gun drill work?
Gundrilling is a deep hole drilling process that uses a long, thin cutting tool to produce holes in metal at high depth-to-diameter ratios. Gun drilling is effective in diameters from 1 – 50 mm [0.04 – 2.00 in].
Are humans donuts?
Topologically speaking, the human body and a ring doughnut have exactly the same shape. The inside of your GI tract is therefore outside your body. You can test this statement with a thought experiment. You should be able to touch any part of the outside of your body.
What are the main organs of the reproductive system?
The primary reproductive organs, or gonads, consist of the ovaries and testes. These organs are responsible for producing the egg and sperm cells gametes), and hormones.
How many holes a female body have?
There are two openings in the vulva — the vaginal opening and the opening to the urethra (the hole you pee out of). The urethral opening is the tiny hole that you pee out of, located just below your clitoris. The vaginal opening is right below your urethral opening.
What is a pistol drill?
Gun drills are straight fluted drills which allow cutting fluid (either compressed air or a suitable liquid) to be injected through the drill’s hollow body to the cutting face. They are used for deep drilling—a depth-to-diameter ratio of 300:1 or more is possible. Gun barrels are the obvious example; hence the name.
What is long hole drilling?
In Top Hammer long hole drilling, namely production drilling, the hole length is typically between 10 m up to 40 m and the hole size vary from 51 mm up to 127 mm. The long holes are drilled with extension rods. Long hole drilling is used in various mining methods like sublevel open stoping and VCR stoping.
What is drilling and types of drilling?
Drilling is a cutting process that uses a drill bit to cut or enlarge a hole of circular cross-section in solid material. There are four main methods for drilling rocks :percussion drilling, churn drilling, diamond drilling and rotary drilling.
What are the parts of the female reproductive organs?
A female’s internal reproductive organs are the vagina, uterus, fallopian tubes, and ovaries. The vagina is a muscular, hollow tube that extends from the vaginal opening to the uterus.