R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基.R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.通过选择特定的同系物混合物, 可以达到应用性能的优化.By selection of specific homologous mixtures, application ...
The story of their exploration is inextricably bound up with the character of the caves themselves.他们的勘探经历与这些洞穴本身的特征有着不可分割的紧密联系。Libra sees life as a pure mental exploration, while Cancer's experience is more tactile...
Part of the rock wall overhung the path at one point...石墙的一部分在某处悬于小路的上方。Part of the rock wall overhung the path at one point.石墙的一部分在某处悬于小路的上方。The threat of war overhung mankind then.当时战争威胁着人类.The gray wind of December is...
他们测试了这台发射机的发射范围.They tested the range of this transmitter.只要在发射机中存在调制信号, 就含有旁频带出现.When there is a modulated signal from transmitter, there are side bands.他们住在无线电发射机的有效范围以内.They live within range of the transmitter....
I'm a blood donor; I can't risk any contagion.我是献血者，我不能冒任何接触传染的危险。You could never eliminate risk, but preparation and training could attenuate it.风险不可能完全消除，但可以通过防范和培训来降低。You're taking a big risk showing th...
这些仪器是经过精密调整的.These instruments are very finely set.资产重组是实现这一战略性调整的主要形式。The recombine of property is the main form which realizes the strategic adjustment.是把任何物种阴阳分子之间的空间重新调整的方式.Ways that rearrange the molecular space bet...