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- empty upper defect level 空缺陷上能级
- There are lots of articles researching on pull system model,which often neglecting the defect of parts or assuming the defect level equals to zero directly in production process. 关于拉式系统模型的研究文献很多,但它们往往忽略生产过程零部件缺陷的存在或者直接假设缺陷水平为零。
- Using deep level transient spectroscopy,We studies the defect levels of BSF silicon solar cell irradiated by C,O ions. 对BSF硅太阳电池受碳、氧离子辐照前后的深能级瞬态谱进行了研究，结果表明碳、氧离子在硅太阳电池中引入的缺陷能级非常相似。
- I'd like a room on the upper level. 我想要楼上的房间。
- He asked for a donation but went away empty handed. 他请求人们捐款，但离开时却一无所获！
- An empty stomach is not a good political adviser. 空肚子不是政治上的好顾问。
- Tears are secreted by an organ under the upper eyelid. 眼泪由上眼睑下面的器官分泌。
- The baker empty several bags of flour into a bin. 面包师把几袋面粉倒入贮藏箱里。
- Defect levels most often are measured as defects per million opportunities (DPMO), also called parts per million (PPM). 最常用来评估缺陷等级的物理量是百万机会缺陷数（DPMO），也称百万分率（PPM）。
- Don't always indulge in empty talk. 别总是纸上谈兵。
- His footsteps echoed (in the empty hall). 他的脚步声(在空荡荡的大堂里)产生了回声。
- They detected no defect in the product. 他们没发现产品有任何问题。
- I had to empty out the drawer to find the papers. 我不得不倒出抽屉的东西以找出那些文件。
- This was his fatal defect; he was of feeble will. 这是他致命的弱点，他意志薄弱。
- My hometown is in the upper reaches of the river. 我的家乡在这条河的上游地区。
- These words are empty of meaning. 这些话毫无意义。
- The old empty house soon went to rack and ruin. 这所旧的空房子很快就毁坏了。
- He locked his diary in the upper drawer. 他把日记锁在上层抽屉里。
- Don't build on his empty promises. 不要指靠他的空洞诺言。
- A defect of focus, such as blurring in an image. 像差焦点不准确而造成的物像模糊
