The other half discovered the container was empty—and realized the tester had fooled them.
另外一半（孩子）发现容器是空的，并意识到测试员欺骗了他们。
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The main contents are as follows: the structure and operating principle of the half feeding type peanut stripping tester are briefly analyzed, and primary capabilities of this test-bed are summarized.
The Rockwell hardness tester is a precision measurement instrument in material and part hardness testing, which is often used in detection of materials, product and half-finished product.