“包裹物”的英语？

果实是植物用来包藏种子的包裹物.Fruits are packages in which plants wrap up their seeds.经测试具有优异的防止如维生素或酶等易变分子的降解,保持被包裹物活性的功效.Have proved to protect from degradation labile molecules such as vitamins or enzymes.这些缺陷包括:包裹物,色心, 开裂, 台阶面,位错,...