The results show that the strength and hardness of the mold produced by this method are much higher than those of normal sand mold, suitable for producing high precision thin wall castings.
结果表明:此工艺方法生产的铸型,其强度、硬度远高于一般铸型,适合于生产尺寸精度高的铸件。
But that was not before fishermen about 70km south of the plant had caught tiny sand-eels, known as konago, with larger than normal traces of radioactive iodine and caesium.
然而,在此之前有渔民在核电站向南大约70千米的地方捕到了含放射性碘元素和铯元素超标的一种叫做玉筋鱼的沙鳗鱼。
The observation in the Nanhui tidal flat demonstrates that sand layer is deposited by storm, and clay layer is deposited during normal weather.
潮坪观测证明,砂质单层是风暴沉积,而泥质单层是正常天气的沉积单元。
Tail sand exclude system is the work of will choose to iron powder tail beach volleyball far from the machinery area, in order to guarantee the normal operation of machine.
尾沙排除系统的功用是将选去铁粉的尾沙排到远离本机械的区域,以保证机械的正常运转。
The experimental results indicate that ultrasonic processing can improve the normal temperature strength of sodium silicate sand, but deteriorate its collapsibility.
试验结果表明,超声处理虽然提高了水玻璃砂的常温强度,却也恶化了溃散性;
But the composite modification material can not only improve the normal temperature strength of sodium silicate sand but also its collapsibility, so it is a relatively perfect modifier at present.
而作者开发的复合改性剂,既可提高水玻璃砂的常温强度,又可改善水玻璃砂的溃散性,是目前较为理想的改性剂。
The problems in the exploitation of such reservoirs are that the high viscosity leads single well to low productivity, and the sand production is also high, affecting the normal production.
此类油藏开采中存在的问题是原油粘度高导致单井产能低,而且极易出砂,影响正常生产。
Then, normal contact stiffness and shear contact stiffness of sand particles are derived according to researches above.
在砂土颗粒接触模型的基础上推导出砂土颗粒法向接触刚度、切向接触刚度的表达式。
It was pointed out that the strength of molding sand and compactness of sand mold is the key factors influencing the rigidity of green sand mold under normal temperature.
指出型砂强度和砂型的紧实程度是常温下影响湿砂型刚度的主要因素。
The cost to construct the permanent engineering, which is for preventing the bank from flood using current normal method of construction on riverbed made of sand, is too high to be accepted.
如何利用现有的常规方法在粉细沙河床上修建永久防洪护堤工程,因其工程造价过高致使社会难以承担;为此,提出采用斜向灌浆护坡新技术修建永久性防洪护堤。
Abstrcat>The cost to construct the permanent engineering, which is for preventing the bank from flood using current normal method of construction on riverbed made of sand, is too high to be accepted.
如何利用现有的常规方法在粉细沙河床上修建永久防洪护堤工程,因其工程造价过高致使社会难以承担; 为此,提出采用斜向灌浆护坡新技术修建永久性防洪护堤。
Under the condition of low compactness of sand as well as low normal stress, the thickness of geogrid-soil interface decreases with increase of normal stress, exhibiting negative linear relationship.
在砂土密实度及法向应力较低情况下,筋土界面厚度随法向应力的增大而减小,两者呈一负相关的线性关系。
Under the condition of low compactness of sand as well as low normal stress, the thickness of geogrid-soil interface decreases with increase of normal stress, exhibiting negative linear relationship.
在砂土密实度及法向应力较低情况下,筋土界面厚度随法向应力的增大而减小,两者呈一负相关的线性关系。
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