不变的

Hold the line on prices; keep the price of something constant .

保持价格不变；保持某种东西的价格不变。

It stands to reason that constant velocity implies not only constant speed but unchanging direction as well.

显然，匀速不仅意味着速度的大小不变，而是方向也不变。

When G is not a commutative semitopological semigroup, Lau and Takahashi proved the ergodic theorem for right reversible semigroups of nonexpansive mappings by using the methods of invariant means.

而当G非交换时，Lau和Takahashi利用不变平均技巧，在假定G是右可逆，X具一致Frechet可微范数及RUC存在不变平均等条件下，给出了非扩张半群的遍历压缩定理。

The old saying," using invariability to solve the changes," do not you think it's very right.?

古语有云，"以不变应万变，"难道你不认为只是对的？

This paper deals with the problem of finding a lower-order linear continuous time-invariant stable state space symmetric system to approximate a given higher-order linear continuous time-invariant stable state space symmetric system so that the L_2 norm of the model mismatch is minimized.

研究用一个低价隐定连续线对称性时不变系统去近似一个高阶隐定连续线对称性时不变系统以使它们之间的L2 -范数误差最小化。

And local coordinate representations of left invariant symplectic structure and symplectic left invariant vector field on the Symplectic-Lie group are given.

还给出了辛李群上左不变辛结构和辛左不变向量场的局部坐标表示。

The results show that the vertical sintering speed changes notably with the proceeding of sintering process. After ignition and thermal retardation the bed permeability deteriorates and the sintering speed decreases notably because of the progress of physical chemistry reaction, formation and broaden of combustion zone, and formation of overwet zone. In about 25 min, the over wet zone vanishes, so the bed permeability meliorates and the speed arises rapidly.

结果表明：垂直烧结速度并非固定不变，而是随着烧结过程的逐步进行发生显著变化；点火保温后，随烧结物理化学反应的进行，燃烧带逐渐形成并变宽且产生过湿现象，导致料层的透气性显著变差，烧结速度显著下降，直至约25 min后过湿层完全消失，透气性变好，烧结速度迅速上升。

Don't knock the weather; nine tenths of people couldn't start a conversation if it didn't change once in a while.

切勿诅咒天气；十个里头有九个，如果天气不是偶尔变一变的话，就聊不起来的呢。

Based on the theory about nonlinear normal modes and normal form, a method of normal mode invariant manifolds for the analysis of simple Hopf bifurcating solutions is presented.

基于非线性模态不变流形及范式理论，针对一类非线性结构振动系统和机电耦合系统，提出一种分析其简单Hopf分叉解的模态不变流形方法。

G. You's theorem and the theory of normally hyperbolic invariant manifolds.

本文第二章简要地介绍了低维不变环面的类型和共振不变环面以及它们的各种保存性结果。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。