例句與造句

1. Also a study involving stable isotope ratios might include the molecule 18 O 16 O.
2. ;Ptolemy : An instrument measuring stable isotope ratios of key volatiles on the comet's nucleus.
3. Absolute geochronology can be accomplished through radioactive isotopes, whereas relative geochronology is provided by tools such as palaeomagnetism and stable isotope ratios.
4. They can be used to reconstruct past climate by examining the stable isotope ratios and trace element content of the shells ( tests ).
5. However, the expression "'stable isotope ratio "'is preferably used to refer to isotopes whose relative abundances are affected by isotope fractionation in nature.
6. It's difficult to find stable isotope ratio in a sentence. 用stable isotope ratio造句挺難的
7. The most common methods include : The use of long-term stand alone soil flux systems for measurement at one location at different times; survey soil respiration systems for measurement of different locations and at different times; and the use of stable isotope ratios.
8. Global temperature and ice volume can be revealed by the isotopes of oxygen, and the history of the carbon cycle and oceanic productivity by examining the stable isotope ratios of carbon; see ?18O and ?13C . The concentration of trace elements, like magnesium ( Mg ), lithium ( Li ) and boron ( B ), also hold a wealth of information about global temperature cycles, continental weathering, and the role of the ocean in the global carbon cycle.