1.The conductor played the small violin in a soft and gentle tone.
指挥家用柔和而轻快的声音演奏了小号。
2.The scientist used a small caliber gun to test the material's strength.
科学家使用一把小口径枪来测试材料的强度。
3. The engineer calculated the spring constant of the huke using the formula F = kx, where F is the force, k is the spring constant, and x is the displacement.