There are striking differences in life span between different species, but within one species the parameter is relatively constant.
不同物种之间的寿命存在显著差异，但在同一物种内，这一参数是相对稳定的。
Over recent decades, many species of bacteria have been shown to be in constant communication with each other.
近几十年来，很多种细菌被发现彼此间存在着持续的交流。
The "survival of the fittest" was the key to the constant change in species.
“适者生存”是物种不断变化的关键。
Monomer reactivity ratios is the ratio of the rate constant for a reactive propagating species adding its own type of monomer to the rate constant for its addition of the other monomer.
单体竟聚率是指反应增长种加成到同种单体的速率常数与它加成到其它类型单体的速率常数之比。
The direction of rotation is often constant in a species; for example, Convolvulus always rotates in an anticlockwise direction.
在特定的物种中旋转的方向是恒定的，例如旋花科植物总是逆时针方向旋转。
It is introduced that the calculating principle and the math model of the equilibrium constant method for calculating the equilibrium distribution of species of water solution.
介绍了基于平衡常数法的水溶液平衡组分分布的计算原理及其数学模型。
No maintenance: all the species chosen don't require constant maintenance. In this way it's possible to save money for the public administrators.
无需维护：所有的物种均不需要长期的维护，这样也可为公共管理部门节省开支。
A species can be characterized by its karyotype since the number, size, and shape of chromosomes vary greatly between species but are fairly constant within species.
由于不同物种的染色体数目、大小和形状有很大区别并且具有稳定性，因此核型可以为某一物种的特征。
However, severely impacted by intensive human activities, species resources in Yangtze River have been on constant decline, and the situation of migration species is among the worst.
由于人类活动的影响，长江大批物种资源持续衰退，而洄游性物种的衰退尤为严重。
Although prokaryotes are a constant presence in our environment, we hear most about the relatively few species that cause illnesses.
虽然原核生物是恒定的存在我们的环境里，我们听见导致病症的多数关于相对地少量种类。
The base pair ratio, at: GC, is constant within a species but differs between species.
GC之间的碱基比具有种内特异性，但在不同种之间往往是不同的。
The base pair ratio, at: GC, is constant within a species but differs between species.
GC之间的碱基比具有种内特异性，但在不同种之间往往是不同的。
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