While previous and recent etiological analyses remain non-conclusive, environmental factors were shown to be associated with BN.

虽然前期和最近的病原分析不具决定性，但是环境因素却显示出同树皮坏死有联系。

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D. C. and A. C. characteristics of non-ideal operational amplifiers are examined from a general viewpoint, and a set of useful expressions and conclusive results are obtained.

本文从普遍性的意义上讨论了非理想运算放大器的交、直流性能，给出了一系列有用的公式和结论。

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It needs to be emphasized here that contrary to Saudi claims that charities such as Al Haramain, the World Muslim League (WML), the World Assembly of Muslim Youth (WAMY) and the International Islamic Relief Organization (IIRO) are independent and non-governmental, there is conclusive evidence from Saudi sources that they are tightly controlled by the government and more often than not run by government officials.

CENTERFORSECURITYPOLICY: Alexiev testifies on Wahhabi influence in US