針狀頭部 的英文怎麼說
中文拼音 [zhēnzhuàngtóubù]
針狀頭部
英文
needle nose-
The nipple pain may continue even after the feed is over. most cases typically present with shooting or burning deep breast pain, which may radiate to the back & shoulders, & worsen even after the feed
其征狀為哺乳后乳頭持續疼痛，乳房有陣發性針刺感或灼熱性痛楚，甚至可能會擴散至背部及肩膊。Abstract : based onmethods of foreign countries of using wi nd tunnel test and numerical flow simulation, optimum nose a nd tail shapes ofhigh - speed trains are studied to achieve optimum aerodynamic performance so as to efficiently reduce the influence of theaerodynamic phenome na on the train operation and the environment. research results of foreign countr ies are introduced
文摘:針對國外利用以風洞模型模擬試驗和以流場數值模擬計算為主的方法來尋求高速列車最佳的頭尾部形狀，使列車的綜合氣動性能最佳，從而有效地降低空氣動力學現象對列車運行和周圍環境的影響進行了探討，介紹了國外在此方面取得的主要成果。Extension of improved variety in tianjin has made a great progress since the start - up of the 9th " five seed project, but there are still many problems exist. including : 1. disconnection among seed cultivation, seed reproduction and seed extension, short of sustainable scientific research of seed cultivation, lack of effective variety protection and competitive varieties
品種質量是種業發展的關鍵環節，本文針對天津市種業的現狀指出當前存在的主要問題在於：一是育、繁、推脫節，科研育種力量后勁不足，品種保護跟不上，沒有拳頭品種；二是良種推廣部門多是貿易公司形不成產業；三是產后加工跟不上，阻礙了良種產業化的形成。
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