基底不稳定性的英文：
basal instability

basal是什么意思：
adj. 基础的，基本的；基部的

The scape is the first or basal segment of the antenna
柄节是触角的第一节或基节。

Basal subjects sequentially encounter disesteem.
基础科室继续遭遇冷遇。

Inflorescence a spikelet with basal bracts not subtending buds.
花序一小穗具基部的苞片并非对着芽。

Usually the more basal nodes are less floriferous, or not at all.
通常越近基部的节上花芽越少，或根本没有。

One of the two chaffy basal bracts of a grass spikelet.
颖片禾草类的小穗状花的两个禾壳状的基部苞片之一

instability是什么意思：
n. 不稳定（性）；基础薄弱

Water may serve as a type of instability.
水可以作为不稳定性的典型代表。

Combustion instability continues to plague development efforts.
燃烧不稳定仍然阻碍研制工作的发展。

aerodynamic (passive) instability is a disadvantage for manned vehicles
气动力(被动)不稳定对于载人飞行器是不利的。

The riot can be considered a symptom of political instability.
这次暴动可看作是政治上不稳定的征兆。

That would lead to ideological confusion and political instability.
这就会造成思想混乱，导致政治的不稳定。