过熔

The thermal boundary layer had previously been a part of the mantle that had been metasomatized and enriched by fluids/melts from the asthenosphere.

这种热边界层在发生岩浆作用之前是被来自软流圈深部的流体和/或熔体交代富集过的地幔。

The principles and a description of the main parts of the new instruments are as follows :(1)By means of a fused quartz mirror system and mercury horizon(shown in fig.4),a telescope with a fixed glass grid,three photomultipliers with respective a.c.amplifiers and a time recorder,the astrolabe can determine the time of almu- cantar transit of a star ...

新仪器的特点如下：(1)借助熔石英角镜组和汞地平、一架望远镜和固定的玻璃记录栅、三个光电倍增管及其交流放大器和一架计时仪，此仪器能无人差地测定星过等高圈时刻。

At last, the growth mechanism selection of the decagonal quasicrystal was also achieved by means of changing the structure of the nucleation substrate, which provides the direct experimental evidence for the theoretical research of quasicrystal.

且当熔体过冷度大于临界值时，单相准晶生长将发生从侧向生长向连续生长的粗糙化转变，最后通过改变触发形核衬底结构类型实现了连续和侧向两种生长机制的自由选择。

Low ash results in valve recession while high ash leads to valve guttering or torching and excessive piston and combustion chamber deposit.

灰分过低，造成气门磨损加剧；灰分太高，造成气门熔损及燃烧室和活塞沉积物增加，严重时导致活塞环及气缸套磨损。

The process and mechanism of primary silicon growth in the Al-Si hypereutectic melt were studied by quench interrupting.

摘 要：利用等温液淬的方法，研究了Al-18%Si过共晶合金熔体中初生硅的生长行为及机制。

The refinement and modification of microstructure of Al-Si hypereutectic alloy have been received great interest over the past decades.

实验结果发现，对合金熔体进行过热处理不仅能影响合金的形核，而且也能影响其生长。

The results of the pair analysis technique show that the icosahedral short-range order may grow with the decrease of the temperature and may become more prevalent in the undercooled state.

我们的模拟结果表明金属熔体中的二十面体短程序随着温度的降低而增加，并在过冷液态中而占优势。

In contrast, the two rock associations at the south belts were derived from mesomatised lithospheric mantle. However, the ultramfic-alkaline rock association was resulted from immiscibility of parent magma, whereas sodic alkaline rocks were produced by highly differentiation at deep level.

南部的两种岩石组合类型均起源于岩石圈地幔，并在部分熔融之前发生过交代富集作用，但是超镁铁质岩-碱性岩组合为原始岩浆经不混熔作用形成，而钠质碱性岩是原始岩浆在深部经历了高度分离结晶的产物。

Effect of melt superheating on the microstructure and the mechanical properties of Al 7Si 0 50Mg alloy was experimentally studied in this paper.

通过对Al 7%Si 0 5 0 %Mg合金进行不同温度的过热处理试验，研究了熔体过热对其显微组织和力学性能的影响。

With the increase of the melt superheating treatment temperature and the superheating time, the solid/liquid interface stability decreases.

随着熔体过热温度的提高和过热时间的延长，液固界面稳定性降低；相反，随着低温静置时间的延长，液固界面稳定性提高。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。