锂离子电池能保持电量。同锂氢电池每个月损失20%的电量相比，锂离子电池组每个月仅损失5%的电量。
Theyhold their charge. A lithium-ion battery pack loses only about 5 percent of itscharge per month, compared to a 20 percent loss per month for NiMH batteries.
当宇宙诞生的时候，除了氢、氦和少量的锂元素之外，什么也没有。
When the universe was born, there was nothing but hydrogen, helium and a little lithium.
而随着宇宙的进一步冷却，这些质子与中子便有能力团聚一起并组成质量最小元素中的核子，这些元素即氢、氦与锂。
When it had cooled further, these protons and neutrons were able to get together to form the nuclei of the lightest elements-hydrogen, helium and lithium.
在四氢呋喃存在下，将丙烯和丁基锂直接反应合成了未见文献报道的烯丙基锂四氢呋喃配合物。
New allyl lithium THF complex was prepared conveniently by the reaction of propene with n-butyl lithium in the presence of tetrahydrofuran.
其它碱金属包括氢(技术上说不是种金属)，锂，钠，钾，铷，铯。
Other Alkali Metals include Hydrogen (technically not a metal), Lithium, Sodium, Potassium, Rubidium, and Cesium.
其中有碱性锌锰电池、锂一次电池及小型可充电镉镍电池、氢镍电池和锂离子电池。
Among them, there are alkaline zinc manganese batteries, lithium batteries, small rechargeable cadmium nickel batteries, hydrogen nickel batteries and lithium ion batteries.
然后，在无水THF中用氢化铝锂还原，得纯的手性2 ，4 二羟甲基四氢吡咯衍生物。
All of the 2,4 pyrrolindinediester derivatives were reduced with lithium aluminum hydride in anhydrous THF, and ten new chiral 2,4 Dihydroxylmethylpyrrolidine derivatives were found.
本发明公开了一种磷酸二氢锂的制备装置，可减缓对负压蒸发器的腐蚀。
The invention discloses a device for preparing lithium dihydrogen phosphate, which can slow down the corrosion to a negative pressure evaporator.
以硼酸三正丁酯、甲醇锂为主要原料，甲醇和四氢呋喃为溶剂，利用溶胶-凝胶法通过优化工艺制备了掺锂硼酸盐凝胶。
Li2O-B2O3 composite gels were successfully prepared from tri-n-butyl borate and lithium methoxide dissolved in methanol and tetrahydrofuran via sol-gel technique.
以硼酸三正丁酯、甲醇锂为主要原料，甲醇和四氢呋喃为溶剂，利用溶胶-凝胶法通过优化工艺制备了掺锂硼酸盐凝胶。
Li2O-B2O3 composite gels were successfully prepared from tri-n-butyl borate and lithium methoxide dissolved in methanol and tetrahydrofuran via sol-gel technique.
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