研究人员称，至于密度这么高的行星是如何形成的，这一点尚不清楚，但它很可能是一颗被主脉冲星剥夺了大气的白矮星留下的晶体残骸。
How such a dense planet formed is unclear, the researchers say, but it's probably the crystalline vestige of a White Dwarf star whose atmosphere was stripped away by the parent pulsar.
主脉有3个维管束，排列成三角状。
叶脉结构较为复杂，主脉发达。
正对主脉的上表皮凹陷处均有泡状细胞。
The bulliform cells were situated in groove of upper epidermis facing the main vein.
同样有许多次要的脉轮，例如在主脉轮之间。
There are also many minor chakras, for example between the major chakras.
系统的扫描电流周期和调制器的主脉冲同步，可消除扫描均匀性中出现的拍频现象。
In the system the period of the scanning current is completely synchronized by the major pulse of the modulator in order to avoid the beat.
定时器是雷达系统的重要部分，它为雷达全机提供所需的各种主脉冲定时信号和波门定时信号。
Timer is an important part of Radar system, it affords system all the AP timing signals and wave gate timing signals.
在其他实验参量不变的情况下，改变主脉冲电流的波形，比较了激光尖峰与背景光的相对位置。
Changing the wave form of the main current while other experimental parameters being unchanged, the laser spike and the position of background light were contrasted.
实验结果表明，激光产生于主脉冲电流波形的前沿，此时的主脉冲电流是其峰值的65%—75%。
The experimental results show that the soft x-ray laser is produced at the rise-time of the main discharge current which is 65%—75% of the peak at the lasing time.
并根据设计的硬币花纹工艺试验表明，选择较高的主脉冲频率，可获得较小的加工间隙，进而获得良好的表面质量。
It is indicated from the process experiment of coin figure that smaller gap and higher surface quality are obtained by choosing higher main pulse frequency.
给出了脉冲电化学加工极间平衡间隙的数学模型，并据此讨论了高频群脉冲电化学加工中，电源主脉冲频率与平衡加工间隙的关系。
Based on the model, the relationship between the main pulse frequency of supply power and the balanceable inter-electrode gap is discussed.
给出了脉冲电化学加工极间平衡间隙的数学模型，并据此讨论了高频群脉冲电化学加工中，电源主脉冲频率与平衡加工间隙的关系。
Based on the model, the relationship between the main pulse frequency of supply power and the balanceable inter-electrode gap is discussed.
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