The basic principle and hypothesis are analyzed on the Z D and Q D combustion models of the diesel engine.

分析了柴油机零维、准维燃烧模型的基本原理和假设；

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In particular, some upper bounds of the vertex arboricity of the integer distance graph G(Z, D) are obtained when D is a set of positive integers and Z the set of all integers.

特别地，当D是某正整数集合，Z是整数集时，得出了整数距离图G（Z ，D）的点荫度的几个上界。

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DCS-Z-D-50 double-bucket packaging scale has quick packaging and high accuracy. It is digital, readable, easy maintenance.

DCS-Z-D-50 双斗包装秤，包装速度快，计量精度高，数字显示，直观易读，稳定可靠，维护方便。

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That's it. Again, these other p dxy dyz - or the d x y, d y z, those are going to be those more complicated linear combinations, you don't need to worry about them.

同样，这些p轨道,或者，它们是一些,很复杂的线性组合，你们，不用管它。

麻省理工公开课 - 化学原理课程节选

You need to know how to think about them in the same way we think about s and p orbitals, but for example, you don't yet need to know what all of the names are except for this 3 d z squared here.

你们只要知道，如何像考虑s和p轨道一样,来考虑它们，但你们不需要,知道它们的名字,除了这个3dz2轨道外。

麻省理工公开课 - 化学原理课程节选

What you need to know is that when m equals 0, 3dz2 it's 3 d z squared.

你们要知道的是,当m等于0时，它是。

麻省理工公开课 - 化学原理课程节选

If we tack on Y, Z, D, E, and a little F, then our potential customer pool just exploded.

FORBES: Why Customers Choose To Work With You -- Or Not

Thousands of finance professionals are being involuntarily s-q-u-e-e-z-e-d out of work.

FORBES: Fast Contributors Make More Money than Fast Learners -- Which One Are You?

And Heller has brought his do-it-yourself spirit to the new enterprise: Instead of paying a lawyer to set up the S corporation, as he'd done when he started Z-Code, Heller did it himself on the Internet, using one of the commercial incorporation sites, like Incorporate.com.

FORBES: Who can manage your wealth for you? Look in the mirror.