4月15日,元素新品L3-NGAL镭射指示器上架预售啦.....

NGAL（Next Generation Aiming Lase）最初设计目的是提供比AN/PEQ-15，AN/PEQ-16和LA-5/PEQ更好的下一代紧凑型先进镭照瞄准器，在整体上缩减了尺寸和重量，令到外观体积上比以外的所有的PEQ更加小巧玲珑。

ELEMENTAIRSOF这次复刻的L3-NGAL不单是1:1 原品尺寸外形，而且在常规功率全功能版本上，还增设了多个不同版本，比如：高功率全功能版本、无IR全功能版本、单镭射版本和无功能模型版本等等。使玩家根据自身需要选择合适的版本。

在4月15日-30日期间，首当其冲的4个版本也开始上架预售，这4个版本分别是：
EX461-高功率（10mw）全功能绿镭版
EX462-高功率（10mw）全功能红镭版
EX463-常规功率（5mw）全功能绿镭版
EX464-常规功率（5mw）全功能红镭版

届时只要购买20元抵60元或65元的抵扣卷（详情请咨询TB小二），L3-NGAL到手价也就2**-3**。

好快去元素官方淘宝店骚扰小二吧…

Lasègue’s sign is an interesting clinical sign in medicine as the method and interpretation of the test varies amongst the physicians. The Lasègue test used in the clinical examination of patients presenting with low back pain. It is an important test for determining the nerve root tension. Nerve root irritation can be due to many causes, most common being intervertebral disc prolapse. 
A straight leg raise is used to place tension on the sciatic nerve to aid in diagnosis of the presence of nerve root compression of the lower lumbar nerve roots .
While performing the straight leg raising test, the examiner lifts the extended leg of a patient in a supine position. The test is said to be positive, when the patient experiences pain along the distribution of the lumbar roots . The examiner stops the test when the pain is reproduced or maximum flexion is got. The basis of this test is that the pain is reproduced due to stretching of the lower lumbar and sacral roots when the leg is flexed.
#医学生Medic##内科#

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