采用倒关双密封设计，可带压更换上密封组件，整体阀盖暗杆设计，结构紧凑。
Use back seal design, can replace top seal parts under pressure. Entirety of non-rising bonnet design, have compact structure.
离开家时，她的确穿关双拖鞋。可这双鞋一点用也没有。因为它们太大了，本来是妈妈穿的。
She certainly had had slippers on when she left home, but they were not much good, for they were so huge and had last been worn by her mother.
利用极大似然估计以及方向极大似然估计的概念，分别得到了双参数指数分布的参数的估计量，并证明了双参数指数分布中的两个参数满足双曲线型关。
In this paper, we used the concepts of the maximum likehood estimate and the direction maximum likehood estimate to give two kinds of estimates for two-parameter exponential distribution.
BRCA - 1相关蛋白(BAP1)是一种肿瘤抑制基因，约半数的间皮瘤中显示双等位基因失活。
BRCA-1-associated protein (BAP1) is a tumor suppressor gene, which shows biallelic inactivation in approximately half of all mesotheliomas.
双拉环，一个简单的开和关。
有固体和一种液体的特性，液晶由杆形成的双极的分子组成当在关态里时，能缠绕偏振光。
Having properties of both a solid and a liquid, liquid crystal consists of rod-shaped bipolar molecules which are capable of twisting polarized light when in the "off" state.
图表1。3所示的双曝光技术中对于衍射模型和显微图并没有表示出来，这个倒置，就在衍射模型和显微图之间形成了一个额外的1800相关旋转。
1800 relative rotation between the diffraction pattern and micrograph that would not be detectable in the double exposure technique illustrated in fig. l. 3.
图表1。3所示的双曝光技术中对于衍射模型和显微图并没有表示出来，这个倒置，就在衍射模型和显微图之间形成了一个额外的1800相关旋转。
1800 relative rotation between the diffraction pattern and micrograph that would not be detectable in the double exposure technique illustrated in fig. l. 3.
应用推荐