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| Crumbling shoe
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Shoe, which is used on a wheel trencher to push dirt back into the trencher, buckets so it does not fall into the trench. |
| Crushed stone
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| Crust
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Solid, rocky outer portion of the earth. |
| Cryogen
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A refrigerant such as liquid nitrogen, liquid oxygen or liquid hydrogen. Liquefied gas takes up less volume than when in gas form. Nitrogen liquefies at -320 degrees F and Oxygen at -297 degrees F. |
| Cryogenic liquid
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Liquefied gas. |
| Cryogenics
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Science dealing with the production of very low temperatures and their effects on the properties of matter. |
| Cryostat
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A regulator for maintaining a constant low temperature. An insulated vessel, which maintains a constant low temperature. |
| Crypt
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An underground chamber or vault. |
| Cubature
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Determination of the cubic content of a solid. Volume. |
| Cube
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(1) A solid with six equal square sides and all angles right angles. (2) Raised to the third power. |
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