Durability of wood and wood-based product. Definitions of hazard classes of biological attack. Part 2: application to solid wood.

木材和木基制品耐久性。生物侵蚀危害等级的定义。第2部分：实心木材应用。

youdao

This apparently walks back from a Bush-era declaration that underscored the possibility that the United States might use nuclear weapons if it suffered a chemical or biological attack.

这显然是走回布什时代的宣言，强调了美国可能会使用核武器如果它受到了化学或生物武器的袭击的可能性。

youdao

The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena such as atmospheric pollution, biological attack, and saltwater exposure.

本标准使用的老化条件并不试图去模拟当地气候现象如大气污染、生物侵蚀，以及盐水老化导致的性能退化。

youdao

But he has doubts about whether they would help in a chemical or biological attack.

CNN: gas mask

Ms O'Toole says that hardly any American cities have practised their response to a biological attack.

ECONOMIST: Biowarfare could be the worst terrorist threat of all

Mr Raffarin said that the threat of a biological attack by terrorists made access to vaccines imperative.

ECONOMIST: Mutual understanding