And, just to motivate that, let me remind you about one trick that you probably know from single variable calculus, namely implicit differentiation.

Study of the Bursa of Fabricius in White Peking Duck ⅱ. Morphological and Functional Differentiation of the Epithelium of the Bursa of Fabricius

北京鸭腔上囊的研究Ⅱ腔上囊上皮的形态与机能分化

Homogenization of marketing strategy is serious. Product technology and quality is becoming more mature. The degree of functional differentiation is small.

营销策略同质化严重，产品技术越来越成熟，产品质量、功能差异化程度较小。

Morphogenesis and functional differentiation of thymic corpuscles during the development of fetal thymus

胸腺小体在胸腺发育中的形态发生及其功能探讨

Functional differentiation of HL 60 cells was examined with NBT reduction test.

用硝基四氮唑蓝（NBT）还原试验定量测定HL60细胞的机能分化；

To clarify the exact mechanism of liver cells functional differentiation, a thorough research in the level of gene and protein expression is needed.

要阐明肝细胞功能分化的更确切的机制，尚有待于在基因水平和蛋白质表达谱方面进行更深入的研究。

The functional differentiation of mucin production and invasion and metastasis in colorectal carcinomas

大肠癌细胞粘液分泌功能分化与浸润、转移的关系

However, it is found in the transaction process that the price of fresh agricultural products is uncertain because of big volume and difficulty to keep. There are so many factors affecting the transaction price that big price differentiation exists.

然而，在交易过程中发现，鲜活农产品因具有交易量大、不易久存等特点，商品价格具有不确定性，影响价格变化的因素比较多，价格差异相对较大。

With the datum analyzing and author's investigation of whole Pudong, this part researched Pudong residence spatial structure from the three aspects: house scale and density, house price, and residential differentiation.

论文作者在住宅数据分析和实地调查的基础上，对浦东新区城市住宅现有空间格局从住宅规模与密度空间、住宅价格空间、住宅社会空间等三个方面进行了阐述与分析。

The base effect, hedonic price effect and feature number effect was evaluated by the analysis framework of housing price differentiation.

通过特征价格模型的住宅价格差异分析框架，计算出住宅子市场的基准效应、特征价格效应和特征数量效应。

Concerning the issue of market differentiation, increase users' differentiation awareness through price differentiation of high quality and reasonable price; short-channel, high-coverage and knowledge marketing, to form channel differentiation, and make buyers accept then pay for a premium price.

在市场差异化方面，通过优质优价的价格差异化，短渠道、高覆盖、知识营销的渠道差异化，让用户认知和接受差异化价值，并为此支付差异化溢价。

Based on the geographical distribution and statistical analyses, central part of Central China and northwest North China are likely center of distribution, and the central part of Central China is diversity and differentiation center of this genus.

根据地理分布图及有关分析，认为华中区中部、华北区西北部是该属的丰富度中心和分布中心，华中区中部为中国扁叶甲多样性中心和分化中心。

Based on the geographical distribution and statistical analyses, southern of Southeast China, northern North China and southern Central China are the likely center of distribution, differentiation center and endemic center of this genus respectively.

根据地理分布图及有关统计分析，认为东北区南部-华北区北部和华中区南部&东南部是这个属在中国的分布中心、分化中心和特有中心。

Based on the above results, The authors concluded that Nanlin mountains and nearby was an original differentiation center of Sect.

作者认为南岭及附近地区是山茶组植物的分布中心和分化中心；

Its current distribution and differentiation center is the southwest of China, including Hengduan Montain and eastern Himalayas.

是中国种子植物中最大的属，其现代分布和分化中心是我国西南部的横断山区和东喜马拉雅地区。

The Regional Differentiation Center and the Historical Reasons of Zhenwu Temple During from Song to Ming Dynasty

宋元明时期真武庙的地域分布中心及其历史因素

Our country is the distribution and differentiation center of the Gynostemma, and has abundant resource.

我国是绞股蓝植物分布和分化中心，其资源丰富。

The closely spatial relationship between metasediments, migmatites and migmatitic granite-gneiss in the district exhibits the entire process of transformation from sediments to granitic rocks by metamorphic differentiation, migmatization and partial melting.

变沉积岩、混合岩及混合花岗片麻岩在空间上的密切共生关系，揭示了沉积物经历了变质分异、混合岩化和部分熔融作用改造成花岗质岩石的过程。

The Weizi gold deposit has close relation to An-bearing siliconite formed by metamorphic differentiation.

隈子金矿床与辽河群盖县组合金硅质体关系密切，硅质体属于变质分异而成。

Mass Transfer in Processes of Metamorphic Differentiation

变质分异作用中的质量迁移

The Brief Method on Efficiency Calculation of Differential Gear Train and Its Application

差动轮系效率计算的简便方法及其应用