7.1 Objectives Practice <br>1. Describe the effect of temperature changes on the material, especially in <br>metal <br>2. Measure the length of material expansion coefficient <br>7.2 Equipment and Materials Practice <br>1. Basic stative 1 piece <br>2. Stem length stative 1 piece <br>3. Stems short stative 1 piece <br>4. Ruler metal 1 piece <br>5. Special Indicator 1 piece <br>6. Pipes steel 1 piece <br>7. copper pipe 1 piece <br>8. Pipe 1 piece <br>9. Connecting hose 1 piece <br>10. silicone hose 1 piece <br>11. Boss head 2 pieces <br>12. burner spiritus 1 fruit <br>13. universal clamps 1 piece <br>14. The large rubber stopper 1 hole 1 piece <br>15. The flask 100 ml 1 piece<br>16. The alcohol thermometer 1 piece
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