不变

• A reaction generally remains fixed in elevation even though it carries a force .
  即使承受力，通常反力还是在垂直面内维持固定不变。
• In other words, the hermiticity of a matrix is invariant under unitary transformations .
  换言之，矩阵的厄密性在幺正变换下保持不变。
• There is a range of applied force over which the regression rate remains constant .
  施加的力有一个范围，在这个范围内递减率保持不变。
• Under these conditions, the total mechanical energy remains constant, or is conserved .
  在这种条件下，总机械能保持不变或机械能保存。
• For a system, hamiltonian is invariant under any translation of spatial coordinates .
  对于一体系，哈密算符在任何空间坐标变换下是不变的。
• The organic matter in soil contains a small but fairly uniform proportion of phosphate .
  土壤有机质中含有少量的磷酸盐，且其比例始终不变。
• If we hold one of the three variables constant, we can make a two-dimensional plot .
  如果我们使三个变量中的一个保持不变，则可作二维曲线。
• Man, as a physical being, is like other bodies governed by invariable laws .
  人，作为一个物理的存在物，是和一切物体一样，受不变的规律支配。
• Our nature is not considered immutable, either socially or biologically .
  无论是从社会学还是从生物学的角度来看，我们的本性都不是永远不变的。
• Repeated price hikes in the face of unchanging demand can be a formula for economic suicide .
  在总需求不变情况下，一再提高价格，等于经济自杀。