WBD

The wheat infected by WBD did not show the symptom during the winter time and with the coming of the jointing stage it will display the symptom when the wheat start to turn green during the spring time in April and May.

受WBD侵染的小麦一般冬前不表现症状，春季4、5月小麦返青后随着拔节期来临病害开始显症。

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Operating margins for WBD, meanwhile, have been in the single-digits for the past decade.

同时，Wimm-Bill-Dann过去十年的营运利润率也仅为个位数。

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His article dealt with design of the chemical compositions, steelmaking, rolling and annealing process for WISCO produced cold rolled strip ( WBD) used in the double layer copper soldering pipe.

介绍了武钢研制的双层铜钎焊管用冷轧薄钢带（WBD）的化学成分设计，炼轧及退火工艺。

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