The ceil ( ) function returns the value of a number rounded upwards to the nearest integer 函数的作用是：通过进一法取整（即：返回的数字是大于或等已给定数字的最小整数） 。
2.
Mcfc ( molten carbonate fuel ceil ) , which is one of two kinds of high temperature fuel cells , have been researched in most of countries 高温燃料电池熔融碳酸盐燃料电池( mcfc )或者固体氧化物燃料电池( sofc )和汽轮机组成的联合循环发电系统更具吸引力。
3.
But there has been not correspondingly control system for it by far . ln this thesis a pulse nitrogenous conveying control system based on profibus is designed and achieved on the thinking of modularizing the pulse nitrogenous conveying system , which can be used for different the pulse nitrogenous conveying system and added new control cells . the thesis reviewed systematically the pulse nitrogenous conveying system in practical , and makes the understanding that the system is composed of standard gas storage cell , conveying equipment cell and target container ceil . then a common modularized control system project is designed and achieved by structurized programming orienting process , which consists of four control models , respectively for gas storage cell , for conveying equipment cell and for target container cell 本文综合实际使用的氮保护脉冲气力输送系统，把氮保护脉冲气力输送系统分为标准化的气源设备单元、发送设备单元和目的料仓设备单元，在此基础上，设计了用于氮保护脉冲气力输送系统的通用模块化控制方案，采用面向过程的结构化编程思想，基于profibus现场总线，实现了组成该方案的四类控制模块：气源单元控制模块、发送单元控制模块、目的料仓单元控制模块和通讯处理控制模块。
4.
On the other hand , there is substanial evidences tha dcs mediate tolerane . the gm - csf - stbolated mouse bone mwderived mhc class ii + dc progendors tha are deficient in cell surface erpression of the costbolatory molecules b7 - l and b7 - 2 can induce alloanginspecific t ceil anergy in vbo . systendc adchstraion of these donor - derived dc progendors to recipients intravenously 7 days before transplantation prolonged the median graft survival tane from 9 . 5 days to 22 days wbout additional twnosuppressions in a mouse cardinc twlanation model 1995年， lul等报道表面缺乏共刺激分子，特别是缺乏cd80 ( b7 - 1 )和cd86 ( b7 - 2 )的未成熟型dc能在体外诱导同种抗原特异性的t细胞无能，而对dc的适当处理能够使未成熟型dc潜在的耐受原性得以放大和增强，使得dc在诱导免疫耐受中具有相当重要的作用及潜在的应用价值。
