查询词典 occur
- 与 occur 相关的网络例句 [注:此内容来源于网络,仅供参考]
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However, perfect agreement of ages between structures (i.e., scales and otoliths) did not occur. Crappie length at age should be back-calculated using otoliths when more precise age estimates are needed and with scales when fish are too few to be killed.
因此,对于逆推计算的研究,没有确定耳石和鳞片哪个是完美的,但是在较少的样本的前提下,用耳石来对灰刺盖鱼的体长与年龄比鳞片精确一些。
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First, from room temperature to 500oC, the shell structure is amorphous with crinkly and airtight character. The shell structure begins to change into γ-Al2O3 and α-Al2O3 at 900oC. The surface of shells shows nano-sized pores at 900oC from SEM and BET analyses. When heated to 1000oC and 1100oC, the shell forms stable α-Al2O3 structure with smooth surface. Cracks often occur at the triple grain junctions. The specific surface area and the total pore volume of the hollow spheres increase with the calcination temperature.
首先,将锻烧温度由室温提升至500℃时,球壳属非晶相皱褶状致密结构;在900℃时开始有γ-Al2O3相及些许的α-Al2O3相出现,由SEM及BET结果得知,900℃之球壳表面有许多奈米级孔洞出现;当加热至1000℃和1100℃时,球壳形成稳定相之Al2O3结构,壳层表面趋於平滑,且球壳在晶界处有微裂缝存在;由BET 结果得知,比表面积及总孔洞体积会随锻烧温度之增加,有增加之趋势。
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Finally, some principles and methods are proposed to deal with channel crises when they occur.
最后文章探讨了渠道危机处理的一些原则和方法。
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Malignant melanoma can occur from skin, or any internal organs, among which skin melanoma is more frequently seen, especially in the skin of legs, cunnus, and crissum. However they have been rarely reported. Malignant melanomas of the internal organs can be easily diagnosed with its specitic MRI features, while the non-melanin contained melanoma which has no imageological specific feature are more difficult to be diagnosed. Because CT examination has no specific feature, MRI should be the first choice, for the suspect patient of malignant melanoma.
恶性黑色素瘤多发生于皮肤、内脏各种组织器官,其中皮肤恶性黑色素瘤多见,以下肢、外阴、肛周最多,鲜有影像报道;发生于内脏的恶性黑色素瘤多因具备特征性的MRI信号得以诊断,而不含黑色素的恶性黑色素瘤影像表现无特征性,诊断困难;CT检查不具备特征性,对于怀疑恶性黑色素瘤的患者,应首选MRI检查。
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A white or colorless vitreous insoluble solid; various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechartelierite.
一种白色或无色的玻璃质不溶固体,以各种形式广泛存在于地壳中,如石英、方石英、鳞石英等。
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At all angle s less than the critical angle , both reflection and refraction occur.
对于所有小于临界角的入射角,则既发生反射,又发生折射。
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At all angles less than the critical angle, both reflection and refraction occur.
对于所有小于临界角的入射角,则既发生反射,又发生折射。
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Crookedness will occur when one side is stiffer, not if both sides are equal.
当一侧相对僵硬时,扭曲就会出现,两侧不能对称。
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Most problems, if they occur at all, will crop up in the first 90 days.
大多数问题,如果它们发生在所有,会出现在第90天。
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What is the basis for assuring cross contamination of product does not occur in plant?
5,如何保证发怒污秽的依据产品不在植物中发生?
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。