H+K+L 38 40 41 42 解 :因立方晶系的晶格常数公式为： a?2222Sinθ 0.9114 0.9563 0.9761 0.9980 2?24sin2?(h2?k2?l2)，对应上表4组数据分
别有a =： 0.4972； 0.4980； 0.4990； 0.4995 2
Sinθ: 0.9114 0.9563 0.9761 0.9980 2
Cosθ: 0.0886 0.0437 0.0239 0.002 以a – Cosθ作图
由图解外推法得:a=0.49955
46. 欲在应力仪（测角仪为立式）上分别测量圆柱形工件之轴向、径向及切向应力工件各应
如何放置？假定测角仪为卧式，今要测定一个圆柱形零件的轴向及切向应力，问试样应该如何放置？
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答：当测角仪为立式式，可以使用同倾法中的固定Ψ法中的法0-45来测应力，此时测量方
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向平面与扫描平面重合。测工件轴向应力时使圆柱侧面垂直于入射线（此时Ψ＝0),然后再
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使样品在测量方向平面内转动45（此时Ψ＝45）；测径向应力时，应使样品底面垂直于入
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射线（此时Ψ＝0)，再使样品在测量方向平面内转动45（此时Ψ＝45）；测量切向应力时，应使工件切应力方向垂直于入射线，即使入射线垂直于切向于轴向所形成的平面（此时Ψ＝ooo0)，再使样品在测量方向平面内转动45（此时Ψ＝45）。
当测角仪为卧式时，可用侧倾法来测应力，此时即扫描平面（衍射平面）垂直于测量方向平面，当测工件轴向应力时，使工件位于轴向与径向所构成的平面内，侧面垂直于径向，扫描平面位于径向与切向所构成的平面内。测工件切向应力时，使工件轴向垂直于测角仪，测量时转动一定角度即可。
（英文版 ）
easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the < code > and < rule >, lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management
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regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do comply with < > and < >. To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of \and consciously safeguard and implement party compasses party, take the lead in practicing\three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the < code > as morality, politics and brought to fruition; to implement < >, do not want to, dare not, not with disciplinary ruler to supervision; to discipline a ruler, often the control inspection, and consciously in the ideological red line to draw the row Ming Good accumulation is indeed the bottom line, so that the heart has fear, said to have quit, the line has ended. Attached: indifferent to heart, calmly to the table in our life, there are many unpredictable things will happen, some good, some bad things, we cannot control is powerless to stop, but with time, you will find in life sometimes turns out to be not good, some bad things finally turned out to be a good thing, but then we muddy however did not know, this is the life teach us things. 1, life can be complex, can also be simple. Want simple life of precipitation, to have enough time to reflect, to make Become
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