However, CRT has been met with some severe challenge from many new flat - panel display devices because CRT has some serious defects such as a greater bulk and a heavier weight and so on.
由于存在着体积大、重量重等固有的严重缺陷，CRT器件也一直受到众多新型平板显示器件的严峻挑战。
However, when the skin of it was tubed for circumferential defects, the bulk could result in obstruction.
然而，当用它的皮肤卷成皮管修复环咽缺损时，由于太臃肿会导致阻塞。
First, as to the bulk materials, we can change the temperature, pressure, carrier doping, magnetic field, and defects to tune their electronic states.
电子态的调控通常通过三种方式进行，首先，对于块体材料，我们可以利用温度、压力、载流子掺杂、磁场、缺陷等方法调控电子态的性质。
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