| 21. | The new CBTC system will instead maintain a fixed distance of empty space ( a moving block ) between trains.
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| 22. | Thus the dimer acts as a " molecular handcuff ", locking their binding partners at a fixed distance and orientation.
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| 23. | SATB1 organizes the MHC class-I locus into distinct chromatin loops by tethering MARs to nuclear matrix at fixed distances.
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| 24. | These cameras time vehicles over a known fixed distance, and then calculate the vehicle's average speed for the journey.
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| 25. | Grenz rays are absorbed by air and therefore treatments must be given at fixed distances for which the machine has been calibrated.
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| 26. | The set of points at a fixed distance from one given point is a " sphere ", in a generalized sense.
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| 27. | When performing an experiment, one measures the temperature at a point at fixed distance, and follows that temperature in time.
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| 28. | The shaft liner does not reach right to the bottom of the shaft during sinking, but lags behind by a fixed distance.
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| 29. | To measure height, the user of the Biltmore stick stands a fixed distance from the tree, usually in the United States.
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| 30. | Cars in different lanes could race, but cars in the same lane moved at the same speed, separated by a fixed distance.
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