Studies and Utilization of Resistance to Fusarium Wilt in Watermelon Introduced from Bottle Gourd

Preliminary Studies on the Effective Technique of Cross-Fertilizing Reproduction in Bottle Gourd

长瓜高效杂交制种技术研究初报

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Results The curvilinear relationship between the logarithmic dose of TMP and the strength of TMP increasing the broad-spectrum antibiotic effect of Golden Thread was roughly S-type.

结果TMP对数剂量与其对黄连抗菌增效强度间基本上呈S型曲线关系。

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Amoxicillin is a broad spectrum penicillin antibiotic.

阿莫西林是广谱青霉素类抗生素，由于国内生产能力逐年递增，市场竞争日益激烈。

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A broad spectrum semisynthetic antibiotic produced by modifying cephalosporin.

由修改的头孢霉素制成的半合成的大光谱药物。

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We have more than 200 million students across the country and we care about every one of them.

2亿多学生，每一个孩子的安全都让人十分牵挂。

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Companies have been testing their vehicles in cities across the country ．

公司一直在全国各个城市测试他们的汽车。

高考真题- 2018 北京 阅读D

Designed acoustic imaging system, it is demonstrated that using acoustic lens imaging is feasible through measuring these sound fields distributing of single dot body and three dots body.

设计声成像实验系统，对已知声场中的单点物及同一面上三点物经声透镜变换后的声场分布进行了测量，证实了声透镜成像的可行性。

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A Primary Study On The Optimum Design For Acoustic Focusing Conical Lens

圆锥形凹面聚束声透镜优化设计的初步研究

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Based on the Helmholtz integral with the Kirchhoff approximation, the signal receiving model of acoustic lens and the acoustic scattering model of the target have been made, and stationary phase method is used to evaluate the scattering wave.

论文基于Helmholtz积分，利用Kirchhoff近似建立了声学镜头接收信号模型和目标散射声模型，并采用稳定相位法计算目标散射声。

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Results and Conclusions: Our simulations show that in order to improve the focal shape, the outer diameter of the annulus must be as large but the radius of acoustic lens must be as small as possible.

结果与结论：为了改善椭球焦域长短轴之比，环状外径应尽量取大，声透镜半径应尽量取小；

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The paper focuses on the immersion line-focusing ultrasonic transducer with cylinder curved acoustic lens used in intelligent pig, establishes a mathematical model of acoustic fields, calculates its acoustic field distribution and focal length.

论文针对智能猪用柱形曲面声透镜水浸式线聚焦探头，建立了其声场模型，并对其轴线声场和焦距进行了数值模拟。

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The most pivotal technique is focalizing technique in HIFU technique. At present, self-focused 、 ultrasound phased array 、 acoustic lens and so on are in common use.

HIFU技术中最为关键的技术是聚焦技术，目前所采用的聚焦方式主要有：自聚焦、超声相控阵列聚焦、声透镜聚焦等。

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It was shown that using polystyrene as wedge material, high polymer as transducer material and curved wedge as an acoustic lens was the key point of application effectiveness for phased array system.

为保证相控阵探头在主要特性上等效于普通斜探头，用聚苯乙烯作楔块材料，用高分子聚合物作换能器材料，并用曲面声透镜改善探头在管子轴向和周向的声束特性。

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The acoustic lens focus system has many strong points, such as: ease of operation, structure simple, diverse shape and cheap of sound material and widely applied in the clinical medicine.

声透镜聚焦系统由于其操作方便、结构简单、形状多样、折声材料便宜等方面的优点而在临床医学中被广泛应用。

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We give them a sense of humor because laughter leaven life.

我们要给予他们幽默感，因为笑声可以使生活更轻松。

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There is a sense of humor around every corner when you're driving in America.

当你驾车行驶在美国，你会发现每个角落都飘着一股幽默感。

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Don't you have a sense of humor?

你没有幽默感吗？

provided by jukuu

Somebody's got a sense of humor.

有人蛮有幽默感的。

provided by jukuu

B Americans have this expression: It's good to have a sense of humor about life.

美国人有这样一句话，对生活有幽默感还是好的。

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Mother Nature certainly seems to have had a sense of humor in designing them!

自然母亲别有用心的设计尽显其幽默品味！

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