〈美口〉五角大楼,美国国防部
网络 季戊四醇(Pentaerythritol); 五氯; 五角大楼
So, it´s a penta — what we call a pentatonic scale.
因此,它是一个所谓的,五,我们称之为五声的音阶。
The detection concept for large diameter beam parallelism with penta prism is introduced.
介绍了用五棱镜法检测大口径光束平行度的原理。
The two flame retardants tested – penta and octa PBDE – have been banned in the United States since 2006.
被测试的两种阻燃剂材料-五溴联苯醚(penta-PBDE)和八溴二苯醚(octa-PBDE)-自2006年起已在美国被禁用。
Penta-coordinated phosphorus compounds are very important in organic phosphorus chemistry and biological chemistry.
五配位磷化合物在有机磷化学和生物化学中具有重要作用。
The methods for selecting penta prism and reducing the effect of surface profile error on detection are introduced.
介绍了选择五棱镜的方法和减小面形误差影响的方法。