A synthetic element produced in trace quantities by helium isotope bombardment of curium.
锎一种合成元素，由氦同位素轰击锔可得到微量的这种元素。
These minerals can be dated by radioactive decay techniques because of the very small quantities of radioactive trace elements they, in turn, contain.
这些矿物可以用放射性衰变技术测定年代，因为它们所含的放射性微量元素非常少。
The rest of the chemical elements occur in only minor or trace quantities.
其余的化学元素仅以少量或微量出现。
The articLe introduces the anaLyticaL method for trace quantities of suLfur in synthetic gas.
阐述了利用紫外荧光定硫技术测定低硫合成气体中总硫含量的方法。
Females produce trace quantities of androgens, mostly in the adrenal glands, as well as in the ovaries.
雌性动物血浆中亦含微量的雄激素，可能由卵巢及肾上腺分泌。
Females produce trace quantities of androgens, mostly in the adrenal glands, as well as in the ovaries.
雌性动物血浆中亦含微量的雄激素，可能由卵巢及肾上腺分泌。
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