有四种

The critical point means such a state that all the differences between gas and liquid disappear completely,being a most important parameter of dividing the types of fluid and being widely verified in both theory and practice.Currently,four methods of determining critical point are summarized as follows:①laboratory measurement through examining critical opalescence or recording the bubble point and dew point curves;②empiric relation;③calculation of the bubble point and dew point curves by PVT software;and ④ direct calculation according to thermodynamic theories.

随后对临界点进行确定，临界点是气液一切性质差异均消失的状态，是区分流体类型最重要的参数，并得到了理论和工程应用的广泛验证，目前确定临界点大致有四种方法：①实验测定，通过观察临界乳光现象或记录流体的泡点和露点线；②经验关系式；③通过PVT软件计算流体的泡点和露点线；④利用热力学理论直接计算。

There are at least four operations scheduling algorithm.

1至少有四种的作业调度算法。

There are four kinds of means about penmanship and painting art's aesthetic consideration of nature.

书法艺术和绘画艺术对大自然的审美观照方法一般有四种：一是对审美客体外观的审美追求

There are four invoices mainly used in international trade: commercial invoice, consular invoice, pro forma invoice and customs invoice.

有四种发票主要用于在国际贸易：商业发票，领事发票，形式发票和海关发票。

It promises four different dances to choose from, with the tango, the jive, the quickstep and the salsa, all working out different muscle groups apparently.

它承诺有四种不同的舞蹈可以选择，探戈、摇摆、快步和萨尔萨，明显都能锻炼不同的肌肉群。

There are four different encyclopedias in the reference section of our school library.

在我们学校图书馆的参考室里有四种不同的百科全书。

Ped---child There are four different encyclopedias in the reference section of our school library.

我们学校图书馆里的参考室里有四种不同的百科全书。

I see four kinds of pressure working on college students today: economic pressure, parental pressure, peer pressure, and self-induced pressure.

我发现有四种压力影响着今天的大学生：经济上的压力，父母的压力，同伴的压力，和自己导致的压力。

The Lucerne Super is available in four exterior colors: Dark Mocha Metallic, Gold Metallic, Sharkskin and White Diamond.

卢塞恩超级有四种外观颜色：黑摩卡金属，黄金金属，鲨和白色钻石。

There are four basic types of pumps commonly used in ground water applications Single-Stage Single Suction Centrifugal Pump .

有四种基本泵常见的地下水类型的应用中使用。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。