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This paper focuses on the application of hydrodynamics and magnetohydrodynamics to solar oscillations and accretion process and outflow in star formation.

本文着重讨论了流体和磁流体力学在日震学方面和恒星形成中吸积和外流这两方面的应用。

These counteracting forces of gravity and pressure create oscillations, analogous to sound waves created in air by pressure differences.

这些方向相反的引力和压强产生了振荡，跟空气中的压强差产生声波一样。

They are additionally covered with high-quality material for better shielding from oscillations caused by ambient noise.

为了更好地防止外部噪音产生的震动，它们另外覆盖着高质量的材料。

Its symbolic connotation from this owes to the returning cyclical nature of the seasons; the oscillations of the night sky; self-fecundation; disintegration and re-integration; truth and cognition complete; the Androgyne; the primaeval waters; the potential before the spark of creation; the undifferentiated; the Totality; primordial unity; self-sufficiency, and the idea of the beginning and the end as being a continuous unending principle.

它含蓄地象征着季节的来回循环；黑夜的振动；自我受胎；瓦解和综合；真理和认识的完成；雌雄同体；原始的水；潜在的创世火花；无差别性；整体；原初的合一；自给自足；象征无休止的永恒法则下的开始和终结。

Moreover compared with the Taylor series solution, the frequency shifts in our solutions appear in the expression of oscillations of all orders in both classical and quantum cases, so multiple-scale perturbation method is more suitable for solving the weak-coupling anharmonic oscillation than the Taylor series approach.

与Taylor级数解相比较，无论是在经典还是在量子解中频率移动都出现在各阶振动表达式中，所以多尺度微扰解是弱耦合非简谐振动的较好解法。

Therefore there exist the so called vacuum fluctuations. In the QED, for example, there exist the effects of zero-point oscillations of photons, the effects of vacuum polarization of electron-positron paris, and so on. They all could result in observable consequences , such as the anomalous magnetic moment of the electron, the spontaneous emission of atoms in excited states, the Lamb shift and the Casimir effect, which have been verfied in experiments.

例如，在量子电动力学中真空中存在着光子的真空零点振动效应，正负电子对的真空极化效应等等，它们都导致可观测的物理效果，如磁矩反常、激发态原子自发辐射、兰姆移动、卡西米尔效应等。

This might be one of the reasons that caused the rain belt anomalously southward for the summer of 1997 and 1999. In addition, the phase-locked west and south wind phases of the 30-60 day low-frequency oscillations happened together made obvious contributions to the heavy rainfall to the south of the Yangtze River Valley.

另外，在中国东部30°N及其以南地区，30～60天低频振荡的西风和南风位相锁相的叠加，对这两年夏季长江流域及其以南地区的降水做出了贡献。

Upper limits to the pulsed component of these possible oscillations at the 3-sigma level inferred from the 1994 and 1999 ASCA data in 0.7-5 keV are 3.5x10^-14 erg/cm^2/sec and 1.9x10^-14 erg/cm^2/sec respectively, which are 12.4\% and 6.9\% of the source flux.

最后，依据不同的观测资料，对可能存在於中子星表面的波而言，我们给出3 倍标准差信心水准的能量通量上限：由1994、1999年ASCA的资料，得到3.5×10^-14 erg/cm^2/sec和1.9×10^-14 erg/cm^2/sec，分别为原来星体能量通量的12.4﹪和6.9﹪。

These ultrasonic oscillations may be continuous, but in most cases they are short bursts of ultrasonic energy, stimulated by various amplitude peaks of the audible signal, and dying out quickly, but recurring frequently.

这些超声波震荡可能是连续的，但大多数情况下，它是由可听范围信号电平的不同峰值激励产生的一些超声能量的短脉冲，很快消退但频繁的出现。

A rhythm may be marked by equidistant pulses or by simple oscillations.

节奏可以用平行的节拍或者是简单的摆动来表示。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。