There's no magic formula for a perfect marriage.没有一个达到完美婚姻的神奇方法。配方；处方；药方a list of the things that sth is made from, giving the amount of each substance to usethe secret formula for the blending of the whisky调配威士忌的秘方配方奶（母乳的替代品）a type o...
of IUPAC recommends that amount of substance concentration be abbreviated to ‘substance concentration'.) When there is no risk of confusion the word ‘concentration' may be used alone. The symbol [B] is often used for amount concentration of entities B. This quantity is also sometimes call...
amount (of substance),n n B = N B/L mol (1),(2) chemical amount N A mol-1 Avogadro constant L,mass of atom m a, m kg atomic mass mass of entity m f, m kg (3) (molecule, formula unit)atomic mass constant m u m u = m a(12C)/12 kg (4)mol-1(2), (5)molar ...
SodiumchlorideWaterEth32PredicationofformulaofsubstancesStep1–Classifytheatomspresent:metalornon-metal.Step2–Decidewhetheritisanionic,covalent(simplemolecularorgiantcovalent)substance.Step3–UsetheconceptofjigsawforionicsubstancesandtheconceptofhandsforcovalentsubstancesPredicationofformulaofsubs33ExamplesConstituent...
配方;处方;药方a list of the things that sth is made from, giving the amount of each substance to use 5. [u][c] 配方奶(母乳的替代品)a type of liquid food for babies, given instead of breast milk 6. [c] 方程式(按发动机大小等对赛车的分级)a class of racing car, based on engine ...
e.g. He developed a mathematical formula describing the distances of the planets from the Sun. 他研究出了一个用于计算行星与太阳之间距离的数学公式。 4. 分子式;结构式 In science, the formula for a substance is a list of the amounts of various substances which make up that substance, or an...
A mole is defined as the amount of substance containing the same number of discrete entities (atoms, molecules, ions, etc.) as the number of atoms in a sample of pure 12C weighing exactly 12 g. One Latin connotation for the word “mole” is “large mass” or “bulk,” which is ...
He developed a mathematical formula describing the distances of the planets from the Sun. 他提出了一个用来计算各行星与太阳之间距离的数学公式。 例: using a standard scientific formula. 使用一个标准的科学公式。 3.[C 可数名词]分子式 In science, the formula for a substance is a list of the a...
SIUnitforcurrent:Ampere SIUnitforTemperature:Kelvin SIUnitforAmountofsubstance:molar NumberPrefix n(10 -9 ) µ(10 -6 ) m(10 -3 ) c(10 -2 ) d(10 -1 ) K(10 3 ) M(10 6 ) nano micro milli centi deci Kilo Mega Kinematics AverageSpeed s=∆d/∆t AverageVelocity v=∆x/∆...
formula for something/for doing something There's no magic formula for a perfect marriage. We think we might have hit on a winning formula. Extra Examples Oxford Collocations Dictionary [countable] a list of the things that something is made from, giving the amount of each substance to us...