前言

Introduction: Self tolerance is regarded as the anergy condition for the immune system to self antigens.

前言 自身免疫耐受是指机体免疫系统对自身抗原的无应答状态。

New technology of silicone rubber anti-pollution-flashover is an effective measure to antipollution reconstruction for transformer substation.

0前言对于电力系统耐污闪的研究来说，调整爬距一直以来都是电力系统耐污闪的一个重要措施。

Was the speech clear Any sign of hysteria,anxiety,wandering Miller impressed the doctor as being clear - minded, alert and oriented.

他的话讲得清楚吗有没有任何歇斯底里、惶惑不安和前言不搭后语的现象米勒给医生的印象是神智清醒，机敏灵活，对答如流。

Skin suqamous cell carcinoma, a kind of skin tumor origined fromkeratinocyte or skin appendant organ suqmaous cell, is one of the most commonnon-melanoma skin cancers (about 20%).

咪喹莫特对人皮肤鳞状细胞癌SCL-1细胞株作用机制的研究前言皮肤鳞状细胞癌是起源于角质形成细胞或附属器鳞状上皮细胞的恶性肿瘤，是最常见的皮肤恶性肿瘤之一，其发病率约占全部非黑素性皮肤细胞癌的20％。

The mechanisms of apoptosis of skin squamous cell carcinoma induced by IFN-γand ATRA Introduction and objective Skin squamous cell carcinoma is a malignant neoplasm derived from epidermal keratinocyte and squamous cells of skin appendant organ .It is one of the most common skin carcinoma, and the incidence rate of SCC is 20% in malignant non-melanoma. It is a common disease that seriously harms health of people in our country, so we should pay more attention to it.

维甲酸、γ-干扰素诱导皮肤鳞状细胞癌SCL-1细胞凋亡的机制研究前言与目的皮肤鳞状细胞癌(squamous cell carcinoma，SCC，简称鳞癌)是起源于表皮角质形成细胞或附属器鳞状上皮细胞的一种恶性肿瘤，是常见的皮肤恶性肿瘤之一，其发病率约占全部非黑素细胞癌的20％。

The mechanisms of apoptosis of skin squamous cell carcinoma induced by IFN-γand ATRA Introduction and objective Skin squamous cell carcinoma is a malignant neoplasm derived from epidermal keratinocyte and squamous cells of skin appendant organ .

维甲酸、γ-干扰素诱导皮肤鳞状细胞癌 SCL-1细胞凋亡的机制研究前言与目的皮肤鳞状细胞癌(squamous cell carcinoma，SCC，简称鳞癌)是起源于表皮角质形成细胞或附属器鳞状上皮细胞的一种恶性肿瘤，是常见的皮肤恶性肿瘤之一，其发病率约占全部非黑素细胞癌的20％。

To increase deposition rate and welding speed is the aim of high efficient arc welding.

0前言焊接作为工业生产的重要环节，效率的提高对总的生产率的提高有着举足轻重的作用。

Dual phase stainless steel owns the advantages of Auster stainless steel and Ferrite stainless steel and presents good apprehensive properties.

0前言双相不锈钢的组织结构由奥氏体和铁素体两相组成，两相各占近乎50%，且不含二次析出物。

Automobile mechanics parameter is one of the important factors influencing the automobile maneuvcring.

1前言汽车力学参数是影响汽车操纵稳定性的重要因素之一。

It consists of six parts; the first introduction relating to its significance and backset; the second is a summary about documents, the purpose of content and methods of research. The third expands on the effective teaching connotation, theoretical basis and characteristics of teaching mode.

论文共分六大部分，第一部分为前言，介绍本论文研究的背景、意义；第二部分为文献综述和研究目的、内容和方法；第三部分对有效教学及教学模式的内涵、理论基础、发展、现代教学模式的特点等几方面做了详细的理论上的阐述。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。